The Prophet (ﷺ) said, "He who believes in Allah and the Last Day must either speak good or remain silent."[Muslim].

I asked the Messenger of Allah (ﷺ): "Who is the most excellent among the Muslims?" He said, "One from whose tongue and hands the other Muslims are secure."[Al-Bukhari and Muslim].

The Messenger of Allah (ﷺ) said, "Do you know what is backbiting?" The Companions said: "Allah and His Messenger know better." Thereupon he said, "Backbiting is talking about your (Muslim) brother in a manner which he dislikes." It was said to him: "What if my (Muslim) brother is as I say." He said, "If he is actually as you say, then that is backbiting; but if that is not in him, that is slandering."[Muslim].

The Messenger of Allah (ﷺ) said, "During the Mi'raj (the Night of Ascension), I saw a group of people who were scratching their chests and faces with their copper nails. I asked, 'Who are these people, O Jibril?' Jibril replied: 'These are the people who ate flesh of others (by backbiting) and trampled people's honour."'[Abu Dawud].

The Messenger of Allah (ﷺ) said: "The blood, honour and property of a Muslim is inviolable for another Muslim."[Muslim].

The Messenger of Allah (ﷺ) said, "Whosoever gives me a guarantee to safeguard what is between his jaws and what is between his legs, I shall guarantee him Jannah."[Al-Bukhari].

The Messenger of Allah (ﷺ) said, "Do not indulge in excessive talk except when remembering Allah. Excessive talking without the Remembrance of Allah hardens the heart; and those who are the farthest from Allah are those whose hearts are hard."[At-Tirmidhi]

The Messenger of Allah (ﷺ) said, "He whom Allah saves from the evil of that which is between his jaws and the evil of that which is between his legs will enter Jannah."[At-Tirmidhi].

The Prophet (ﷺ) said, "When the son of Adam gets up in the morning, all the limbs humble themselves before the tongue and say: 'Fear Allah for our sake because we are with you: (i.e., we will be rewarded or punished as a result of what you do) if you are straight, we will be straight; and if you are crooked, we will become crooked."'[At- Tirmidhi].

I asked the Messenger of Allah (ﷺ): "Inform me of an act which will cause me to enter Jannah and keep me far from Hell." He (ﷺ) replied, "You have asked me about a matter of great importance, but it is easy for one for whom Allah makes it easy." He added, "Worship Allah, associate nothing with Him in worship, offer As-Salat (the prayer), pay the Zakat, observe Saum (fasting) during Ramadan and perform Hajj (pilgrimage) to the House of Allah, if you can afford it." He (ﷺ) further said, "Shall I not guide you to the gates of goodness? Fasting is a screen (from Hell), charity extinguishes (i.e., removes) the sins as water extinguishes fire, and standing in prayers by a slave of Allah during the last third part of the night." Then he recited: "Their sides forsake their beds, to invoke their Rabb in fear and hope, and they spend (in charity in Allah's Cause) out of what We have bestowed on them. No person knows what is kept hidden for them of joy as a reward for what they used to do." (32:16-17) Then he added, "Shall I tell you of the root of the matter, its pillar and its highest point?" I replied: "Yes! Certainly, O Prophet of Allah." He said, "The root of this matter (foundation) is Islam, its pillar (mainstay is) As-Salat (the prayer) and its highest point is Jihad (fighting in the Cause of Allah)." Then he asked, "Shall I tell you of that which holds all these things?" I said: "Yes, O Messenger of Allah." So he took hold of his tongue and said, "Keep this in control." I asked: "O Messenger of Allah! Shall we really be accounted for what we talk about?" He replied, "May your mother lose you! People will be thrown on their faces into the Hell on account of their tongues."

I came to the Prophet (ﷺ) and said to him: "Muawiyah and Abul-Jahm sent me a proposal of marriage." The Messenger of Allah (ﷺ) said, "Muawiyah is destitute and he has no property, and Abul-Jahm is very hard on women."[Bukhari and Muslim].

We set out on a journey along with the Messenger of Allah (ﷺ) and we faced many hardships. 'Abdullah bin Ubaiy (the chief of the hypocrites at Al- Madinah) said to his friends: "Do not spend on those who are with the Messenger of Allah (ﷺ) until they desert him." He also said: "If we return to Al-Madinah, the more honourable (meaning himself, i.e., Abdullah bin Ubaiy) will drive out therefrom the meaner (meaning Messenger of Allah (ﷺ))." I went to the Messenger of Allah (ﷺ) and informed him about that and he sent someone to 'Abdullah bin Ubaiy. He asked him whether he had said that or not. Abdullah took an oath that he had not done anything of that sort and said that it was Zaid who carried a false tale to the Messenger of Allah (ﷺ). Zaid said: I was so much perturbed because of this until this Verse was revealed verifying my statement:"When the hypocrites come to you (O Muhammad (ﷺ)), they say: 'We bear witness that you are indeed the Messenger of Allah.' Allah knows that you are indeed His Messenger, and Allah bears witness that the hypocrites are liars indeed." (63:1) Then the Messenger of Allah (ﷺ) called the hypocrites in order to seek forgiveness for them from Allah, but they turned away their heads.[Al-Bukhari and Muslim].

The Messenger of Allah (ﷺ) said, "None of my Companions should convey to me anything regarding another because I desire to meet everyone of you with a clean heart."[Abu Dawud and At- Tirmidhi].

The Messenger of Allah (ﷺ) said, "Truth leads to piety and piety leads to Jannah. A man persists in speaking the truth till he is recorded with Allah as a truthful man. Falsehood leads to transgression and transgression leads to the Hell-fire. A man continues to speak falsehood till he is recorded with Allah as a great liar."[Al-Bukhari and Muslim].

The Prophet (ﷺ) said, "Whosoever possesses these four characteristics, is a sheer hypocrite; and anyone who possesses one of them, possesses a characteristic of hypocrisy till he gives it up. (These are:) When he is entrusted with something, he proves dishonest; when he talks, he tells a lie; when he makes a covenant, he acts treacherously; and when he quarrels, he utters foul language."[Al-Bukhari and Muslim].

The Prophet (ﷺ) said, "He who narrates a dream which he has not seen will be put to trouble to join into a knot two barley seeds which he will not be able to do; and he who seeks to listen to the talk of a people (secretly) will have molten lead poured into his ears on the Day of Resurrection; and he who makes a picture (of people or other creatures with a soul, such as animals and insects) will be (severely punished), and he will be asked to infuse spirit therein, which he will not be able to do."[Al-Bukhari].

The Messenger of Allah (ﷺ) very often used to ask his Companions, "Do any one of you has seen a dream?" So dreams would be narrated to him by those whom Allah willed to relate. One day he (ﷺ) said, "Last night I had a vision in which two men (angels) came to me and woke me up and said to me, 'Proceed!' I set out with them and we came across a man lying down, and behold, another man was standing over his head, holding a big rock. Behold, he was throwing the rock at the man's head, smashing it. When he struck him, the stone rolled away and he went after it to get it, and no sooner had he returned to this man, his head was healed and restored to its former condition. The thrower (of the rock) then did the same as he had done before. I said to my two companions, 'Subhan-Allah! Who are these?' They said: 'Proceed, proceed.' So we proceeded and came to a man lying in a prone position and another man standing over his head with an iron hook, and behold, he would put the hook in one side of the man's mouth and tear off that side of his face to the back (of the neck), and similarly tear his nose from front to back, and his eyes from front to back. Then he turned to the other side of the man's face and did just as he has done with the first side. He had hardly completed that (second) side when the first returned to its normal state. I said to my two companions, 'Subhan-Allah! Who are these?' They said, 'Proceed, proceed.' So we proceeded and came across something like a Tannur (a kind of baking oven, a pit usually clay-lined for baking bread)." I (the narrator) think the Prophet (ﷺ) said, "In that oven there was much noise and voices." The Prophet (ﷺ) added, "We looked into it and found naked men and women, and behold, a flame of fire was reaching to them from underneath, and when it reached them they cried loudly. I asked, 'Who are these?' They said to me, 'Proceed, proceed.' And so we proceeded and came across a river." I (the narrator) think he said, "-- red like blood." The Prophet (ﷺ) added, "And behold, in the river there was a man swimming, and on the bank there was a man who had collected many stones. Behold, while the other man was swimming, he went near him. The former opened his mouth and the latter (on the bank) threw a stone into his mouth whereupon he went swimming again. Then again he (the former) returned to him (the latter), and every time the former returned, he opened his mouth, and the latter threw a stone into his mouth, (and so on) the performance was repeated. I asked my two companions, 'Who are these?' They replied, 'Proceed, proceed.' And we proceeded till we came to a man with a repulsive appearance, the most repulsive appearance you ever saw a man having! Beside him there was a fire, and he was kindling it and running around it. I asked my two companions, 'Who is this (man).' They said to me, 'Proceed, proceed!' So we proceeded till we reached a garden of deep green dense vegetation, having all sorts of spring colours. In the midst of the garden there was a very tall man, and I could hardly see his head because of his great height, and around him there were children in such a large number as I have never seen! I said to my two companions, 'Who is this?' They replied, 'Proceed, proceed.' So we proceeded till we came to a majestic, huge garden, greater and better than any garden I have ever seen! My two companions said to me, 'Ascend up' and I ascended up." The Prophet (ﷺ) added, "So we ascended till we reached a city built of gold and silver bricks, and we went to its gate and asked (the gatekeeper) to open the gate, and it was opened; and we entered the city and found in it men with one side of their bodies as handsome as the most handsome person you have ever seen, and the other side as ugly as the ugliest person you have ever seen! My two companions ordered those men to throw themselves into the river. Behold, there was a river flowing across (the city), and its water was like milk in whiteness. Those men went and threw themselves in it and then returned to us after the ugliness (of their bodies) had disappeared, and they came in the best shape." The Prophet (ﷺ) further added, "My two companions said to me: 'This place is the 'Adn Jannah, and that is your place.' I raised up my sight, and behold, there I saw a palace like a white cloud! My two companions said to me, 'That palace is your place,' I said to them, 'May Allah bless you both! Let me enter it.' They replied, 'As for now, you will not enter it, but you shall enter it (one day).' I said to them, 'I have seen many wonders tonight. What does all that mean which I have seen?' They replied, 'We will inform you: As for the first man you came upon, whose head was being smashed with the rock, he is the symbol of the one who studies the Qur'an and then neither recites it nor acts on its orders, and sleeps, neglecting the enjoined prayers. As for the man you came upon, whose sides of mouth, nostrils and eyes were torn off from front to back, he is the symbol of the man who goes out of his house in the morning and tells lies that are spread all over the world. And those naked men and women whom you saw in a construction resembling an oven, they are the adulterers and the adulteresses. And the man who was given a stone to swallow is the eater of Ar-Riba (usury), and the bad-looking man whom you saw near the fire, kindling it and going around it, is Malik, the gatekeeper of Hell, and the tall man you saw in the garden is (Prophet) Abraham, and the children around him are those who died upon Al-Fitrah (the Islamic Faith of Monotheism)."' The narrator added: Some Muslims asked the Prophet (ﷺ) , "O Messenger of Allah! What about the children of Al- Mushrikun (i.e., polytheists, pagans, idolaters, and disbelievers in the Oneness of Allah and in His Messenger Muhammad (ﷺ))?" The Prophet (ﷺ) replied, "And also the children of Al-Mushrikun." The Prophet (ﷺ) added: "My two companions added, 'The men you saw half handsome and half ugly were these people who had mixed an act that was good with another that was bad, but Allah forgave them'."Another narration of Al-Bukhari is: The Messenger of Allah (ﷺ) said, "One night two men came to me and took me to a blessed land." (The Messenger of Allah (ﷺ) told of the same incident as above) and said, "After a while of walking we came upon a pit like an oven, narrow at the top and wide at the bottom with fire raging in it. When the flames rose up (the people in it) also rose up till they were about to come out; and when the fire subsided they, too, would go down with it. In it were naked men and women." (The remainder of the Hadith is the same as the above Hadith except that at the end of it, the Messenger of Allah said: "We came upon a river of blood in the middle of which there was a man standing, and at the bank of the river there was a man with plenty of stones before him..." In this narration we also find: "They made me climb the tree and they made me enter an abode so beautiful the like of which I have never seen before. There (I saw) old men and youth." In this narration we also find: "'The first house you entered was the abode of the believers in general, and the other house was the abode of the martyrs. I am Jibril (Gabriel), and this is Mika'il. Raise your head.' I looked up and saw something like clouds. They said to me, 'That is your abode.' I said, 'Shall I enter it?' They said, 'You have not completed your term of life yet. When you do, you will certainly enter it."'[Al-Bukhari]

The Prophet (ﷺ) said, "A man utters a word pleasing to Allah without considering it of any significance for which Allah exalts his ranks (in Jannah); another one speaks a word displeasing to Allah without considering it of any importance, and for this reason he will sink down into Hell."[Al-Bukhari].

I asked: "O Messenger of Allah! Tell me, of something to which I may remain steadfast." He (ﷺ) said, "Say: My Rubb is Allah and then remain steadfast." Then I said: "O Messenger of Allah! What do you fear most about me?" He took hold of his own tongue and said: "This."[At-Tirmidhi].