The Messenger of Allah (ﷺ) said, "He who keeps a dog other than one for guarding the fields or herds or hunting, will lose two Qirat every day out of his rewards."[Al-Bukhari and Muslim].

The Messenger of Allah (ﷺ) said, "He who keeps a dog, will lose out of his good deeds equal to one Qirat every day, except one who keeps it for guarding the fields or the herd."[Al-Bukhari and Muslim].In a narration of Muslim, the Messenger of Allah (ﷺ) is reported to have said: "He who keeps a dog for any reason other than to guard his property (lands) or his flock of sheep, his good deeds equal to two Qirat will be deducted every day."

The Messenger of Allah (ﷺ) said, "Angels do not accompany the travellers who have with them a dog or a bell."[Muslim].

The Prophet (ﷺ) said, "The bell is one of the musical instruments of Satan."[Muslim].

The Messenger of Allah (ﷺ) prohibited riding a camel which eats dung, or animal or human waste.[Abu Dawud].

The Messenger of Allah (ﷺ) said, "Spitting in the mosque is a sin, and its expiation is that the spittle should be buried in earth."[Al-Bukhari and Muslim].

The Messenger of Allah (ﷺ) saw spittle or snot or sputum, sticking to the wall towards Qiblah and scratched it off.[Al-Bukhari and Muslim].

The Messenger of Allah (ﷺ) said, "It is not proper to use the mosque for urinating or easing oneself. They are merely built for the remembrance of Allah and the recitation of the Qur'an", or as he stated.[Muslim].

The Messenger of Allah (ﷺ) said, "If anyone hears a man inquiring in the mosque about something he has lost, he should say: 'La raddaha Allahu 'alaika (May Allah not restore it to you),' for mosques are not built for this purpose."[Muslim]

The Messenger of Allah said, "When you see someone buying or selling in the mosque, say to him: 'La arbaha-Allahu tijarataka (May Allah not make your bargain profitable)!' When you see someone announcing something lost in it, say: 'May Allah not restore it to you!"'[At-Tirmidhi].

A man announced (the loss of his camel) in the mosque, uttering these words: "Has any one seen my red camel?" Upon this the Messenger of Allah (ﷺ) said, "May it not be restored to you! The mosques are built for what they are meant to be (i.e., prayer, remembrance of Allah, acquiring knowledge, etc.)."[Muslim].

The Messenger of Allah (ﷺ) prohibited (us) from buying and selling in the mosque; (he also prohibited us from) making announcement in it about something lost and from reciting poems in it.[Abu Dawud and At- Tirmidhi].

While I was in the mosque, someone threw a pebble at me, and when I looked up, I saw that it was 'Umar bin Al-Khattab, who said: "Go and call me these two men." I brought them and 'Umar (May Allah be pleased with him) asked them: "Where are you from?" On their replying that they belonged to At-Taif, he said: "Had you been the inhabitants of Al-Madinah, I would have given you a beating for raising your voices in the mosque of the Messenger of Allah (ﷺ)."[Al- Bukhari].

The Prophet (ﷺ) said, "He who has eaten garlic should not come to our mosque."[Al-Bukhari and Muslim].The narration in Muslim is: "He who has eaten garlic should not come to our mosques."

The Prophet (ﷺ) said, "He who has eaten from this plant (i.e., garlic) should not approach us and should not offer Salat (prayer) along with us."[Al- Bukhari and Muslim].

The Prophet (ﷺ) said, "He who has eaten garlic or onion should keep away from us or our mosques."[Al-Bukhari and Muslim].The narration in Muslim is: "He who has eaten onion or garlic or leek should not approach our mosque, because the angels are also offended by the strong smells) that offend the children of Adam."[Muslim].

"O you people! You eat garlic and onion. I think the odour of these to be very offensive. I saw that if the Messenger of Allah (ﷺ) happened to find a man with such offensive odour in the mosque, he would order him to be taken out of the mosque and sent to Al-Baqi'. He who wants to eat any of these, should cook them till their odour dies out.[Muslim].

The Prophet (ﷺ) forbade (us) from sitting with our legs drawn up to our belly (Ihtiba') during the Friday Khutbah (religious talk before the prayer).[Abu Dawud and At-Tirmidhi].

The Messenger of Allah (ﷺ) said, "When anyone of you intends to sacrifice the animal and enter in the month of Dhul-Hijjah, he should not get his hair cut or nails pared till he has offered his sacrifice."[Muslim].

The Prophet (ﷺ) said, "Allah has prohibited you from taking an oath by your fathers. He who must take an oath, may do so by swearing in the Name of Allah or he should remain silent."[Al-Bukhari and Muslim].