When the Verse: 'It is those who believe and confuse not their belief with wrong (i.e., worshipping others besides Allah): (6.82) was revealed, it became very hard on the companions of the Prophet (ﷺ) and they said, "Who among us has not confused his belief with wrong (oppression)?" On that, Allah's Apostle said, "This is not meant (by the Verse). Don't you listen to Luqman's statement: 'Verily! Joining others in worship with Allah is a great wrong indeed.' (31.13)

The Prophet. said, "The biggest of the great sins are: To join others in worship with Allah, to be undutiful to one's parents, and to give a false witness." He repeated it thrice, or said, "....a false statement," and kept on repeating that warning till we wished he would stop saying it. (See Hadith No.7, Vol. 8)

A bedouin came to the Prophet (ﷺ) and said, "O Allah's Messenger (ﷺ)! What are the biggest sins?: The Prophet (ﷺ) said, "To join others in worship with Allah." The bedouin said, "What is next?" The Prophet (ﷺ) said, "To be undutiful to one's parents." The bedouin said "What is next?" The Prophet (ﷺ) said "To take an oath 'Al-Ghamus." The bedouin said, "What is an oath 'Al-Ghamus'?" The Prophet (ﷺ) said, "The false oath through which one deprives a Muslim of his property (unjustly).

A man said, "O Allah's Messenger (ﷺ)! Shall we be punished for what we did in the Prelslamic Period of ignorance?" The Prophet (ﷺ) said, "Whoever does good in Islam will not be punished for what he did in the Pre-lslamic Period of ignorance and whoever does evil in Islam will be punished for his former and later (bad deeds).

Some Zanadiqa (atheists) were brought to `Ali and he burnt them. The news of this event, reached Ibn `Abbas who said, "If I had been in his place, I would not have burnt them, as Allah's Messenger (ﷺ) forbade it, saying, 'Do not punish anybody with Allah's punishment (fire).' I would have killed them according to the statement of Allah's Messenger (ﷺ), 'Whoever changed his Islamic religion, then kill him.'"

Abu Musa said, "I came to the Prophet (ﷺ) along with two men (from the tribe) of Ash`ariyin, one on my right and the other on my left, while Allah's Messenger (ﷺ) was brushing his teeth (with a Siwak), and both men asked him for some employment. The Prophet (ﷺ) said, 'O Abu Musa (O `Abdullah bin Qais!).' I said, 'By Him Who sent you with the Truth, these two men did not tell me what was in their hearts and I did not feel (realize) that they were seeking employment.' As if I were looking now at his Siwak being drawn to a corner under his lips, and he said, 'We never (or, we do not) appoint for our affairs anyone who seeks to be employed. But O Abu Musa! (or `Abdullah bin Qais!) Go to Yemen.'" The Prophet then sent Mu`adh bin Jabal after him and when Mu`adh reached him, he spread out a cushion for him and requested him to get down (and sit on the cushion). Behold: There was a fettered man beside Abu Muisa. Mu`adh asked, "Who is this (man)?" Abu Muisa said, "He was a Jew and became a Muslim and then reverted back to Judaism." Then Abu Muisa requested Mu`adh to sit down but Mu`adh said, "I will not sit down till he has been killed. This is the judgment of Allah and His Apostle (for such cases) and repeated it thrice. Then Abu Musa ordered that the man be killed, and he was killed. Abu Musa added, "Then we discussed the night prayers and one of us said, 'I pray and sleep, and I hope that Allah will reward me for my sleep as well as for my prayers.'"

When the Prophet (ﷺ) died and Abu Bakr became his successor and some of the Arabs reverted to disbelief, `Umar said, "O Abu Bakr! How can you fight these people although Allah's Messenger (ﷺ) said, 'I have been ordered to fight the people till they say: 'None has the right to be worshipped but Allah, 'and whoever said, 'None has the right to be worshipped but Allah', Allah will save his property and his life from me, unless (he does something for which he receives legal punishment) justly, and his account will be with Allah?' "Abu Bakr said, "By Allah! I will fight whoever differentiates between prayers and Zakat as Zakat is the right to be taken from property (according to Allah's Orders). By Allah! If they refused to pay me even a kid they used to pay to Allah's Messenger (ﷺ), I would fight with them for withholding it." `Umar said, "By Allah: It was nothing, but I noticed that Allah opened Abu Bakr's chest towards the decision to fight, therefore I realized that his decision was right."

A Jew passed by Allah's Messenger (ﷺ) and said, "As-Samu 'Alaika." Allah's Messenger (ﷺ) said in reply, "We 'Alaika." Allah's Messenger (ﷺ) then said to his companions, "Do you know what he (the Jew) has said? He said, 'As-Samu 'Alaika.'" They said, "O Allah's Messenger (ﷺ)! Shall we kill him?" The Prophet, said, "No. When the people of the Book greet you, say: 'Wa 'Alaikum.'"

A group of Jews asked permission to visit the Prophet (and when they were admitted) they said, "As- Samu 'Alaika (Death be upon you)." I said (to them), "But death and the curse of Allah be upon you!" The Prophet (ﷺ) said, "O `Aisha! Allah is kind and lenient and likes that one should be kind and lenient in all matters." I said, "Haven't you heard what they said?" He said, "I said (to them), 'Wa 'Alaikum (and upon you).

Allah's Messenger (ﷺ) said, "When the Jews greet anyone of you they say: 'Sam'Alaika (death be upon you); so you should say; 'Wa 'Alaika (and upon you).'"

As if I am looking at the Prophet (ﷺ) while he was speaking about one of the prophets whose people have beaten and wounded him, and he was wiping the blood off his face and saying, "O Lord! Forgive my, people as they do not know."

Whenever I tell you a narration from Allah's Messenger (ﷺ), by Allah, I would rather fall down from the sky than ascribe a false statement to him, but if I tell you something between me and you (not a Hadith) then it was indeed a trick (i.e., I may say things just to cheat my enemy). No doubt I heard Allah's Apostle saying, "During the last days there will appear some young foolish people who will say the best words but their faith will not go beyond their throats (i.e. they will have no faith) and will go out from (leave) their religion as an arrow goes out of the game. So, where-ever you find them, kill them, for who-ever kills them shall have reward on the Day of Resurrection."

That they visited Abu Sa`id Al-Khudri and asked him about Al-Harauriyya, a special unorthodox religious sect, "Did you hear the Prophet (ﷺ) saying anything about them?" Abu Sa`id said, "I do not know what Al-Harauriyya is, but I heard the Prophet (ﷺ) saying, "There will appear in this nation---- he did not say: From this nation ---- a group of people so pious apparently that you will consider your prayers inferior to their prayers, but they will recite the Qur'an, the teachings of which will not go beyond their throats and will go out of their religion as an arrow darts through the game, whereupon the archer may look at his arrow, its Nasl at its Risaf and its Fuqa to see whether it is blood-stained or not (i.e. they will have not even a trace of Islam in them).

Regarding Al-Harauriyya: The Prophet (ﷺ) said, "They will go out of Islam as an arrow darts out of the game's body.'

While the Prophet (ﷺ) was distributing (something, `Abdullah bin Dhil Khawaisira at-Tamimi came and said, "Be just, O Allah's Messenger (ﷺ)!" The Prophet (ﷺ) said, "Woe to you ! Who would be just if I were not?" `Umar bin Al-Khattab said, "Allow me to cut off his neck ! " The Prophet (ﷺ) said, " Leave him, for he has companions, and if you compare your prayers with their prayers and your fasting with theirs, you will look down upon your prayers and fasting, in comparison to theirs. Yet they will go out of the religion as an arrow darts through the game's body in which case, if the Qudhadh of the arrow is examined, nothing will be found on it, and when its Nasl is examined, nothing will be found on it; and then its Nadiyi is examined, nothing will be found on it. The arrow has been too fast to be smeared by dung and blood. The sign by which these people will be recognized will be a man whose one hand (or breast) will be like the breast of a woman (or like a moving piece of flesh). These people will appear when there will be differences among the people (Muslims)." Abu Sa`id added: I testify that I heard this from the Prophet (ﷺ) and also testify that `Ali killed those people while I was with him. The man with the description given by the Prophet (ﷺ) was brought to `Ali. The following Verses were revealed in connection with that very person (i.e., `Abdullah bin Dhil-Khawaisira at-Tarnimi): 'And among them are men who accuse you (O Muhammad) in the matter of (the distribution of) the alms.' (9.58)

I asked Sahl bin Hunaif, "Did you hear the Prophet (ﷺ) saying anything about Al-Khawarij?" He said, "I heard him saying while pointing his hand towards Iraq. "There will appear in it (i.e, Iraq) some people who will recite the Qur'an but it will not go beyond their throats, and they will go out from (leave) Islam as an arrow darts through the game's body.' "

Allah's Messenger (ﷺ) said, "The Hour will not be established till two (huge) groups fight against each other, their claim being one and the same."

I heard Hisham bin Al-Hakim reciting Surat Al-Furqan during the lifetime of Allah's Messenger (ﷺ). I listened to his recitation and noticed that he recited it in several different ways which Allah's Messenger (ﷺ) had not taught me. So I was about to jump over him during his Salat (prayer) but I waited till he finished his Salat (prayer) whereupon I put, either his upper garment or my upper garment around his neck and seized him by it and asked him, "Who has taught you this Surah?" He replied: "Allah's Messenger (ﷺ) has taught it to me." I said (to him), "You have told a lie! By Allah, Allah's Messenger (ﷺ) has taught me this Surah which I have heard you reciting." So I dragged him to the Allah's Messenger (ﷺ). I said: "O Allah's Messenger I have heard this man reciting Surat Al-Furqan in a way in which you have not taught me, and you did teach me Surah Al-Furqan." On that Allah's Messenger (ﷺ) said, "O 'Umar, release him! Recite, O Hisham". So Hisham recited before him in the way as I heard him reciting. Allah's Messenger (ﷺ) said, "It has been revealed like this." Then Allah's Messenger (ﷺ) said, "Recite, O 'Umar" So recited it. The Prophet (ﷺ) said, "It has been revealed like this." And then he added, "This Qur'an has been revealed to be recited in seven different ways, so recite it whichever way is easier for you."

When the Verse:--'Those who believe and did not confuse their belief with wrong (worshipping others besides Allah).' (6.82) was revealed, it was hard on the companions of the Prophet (ﷺ) and they said, "Who among us has not wronged (oppressed) himself?" Allah's Messenger (ﷺ) said, "The meaning of the Verse is not as you think, but it is as Luqman said to his son, 'O my son! Join not in worship others with Allah, Verily! Joining others in worship with Allah is a great wrong indeed.'" (31.13)