Islam is a religion of refinement and good manners in various aspects of life. One example of that is the attention that it pays to cleanliness and good smells, and consideration for the rights and feelings of others, as they have the right over another Muslim to find him looking good and smelling good. In this hadith, ‘Abdullah ibn ‘Umar (may Allah be pleased with him) narrates that during the Khaybar campaign, which took place in 7 AH between the Muslims and the Jews – and Khaybar is a town located approximately 173 km north of Madinah, on the road to Syria – the Prophet (blessings and peace of Allah be upon him) instructed his companions (may Allah be pleased with them) that whoever had eaten garlic should not approach the mosque. What is meant is that he should not attend the prayers in congregation, lest he cause annoyance and offence to other worshippers, let alone the angels. This applied to those who had eaten garlic raw; as for those who ate it after cooking it with fire, this ruling did not apply to them, because the smell had disappeared. There is a report narrated by Muslim according to which ‘Umar ibn al-Khattab (may Allah be pleased with him) said: O people, you eat two plants which I think are nothing butbad (khabith), namely onions and garlic. I saw the Messenger of Allah (blessings and peace of Allah be upon him), when he noticed the smell of these things coming from a man in the mosque, he would issue instructions that he be taken out to al-Baqi‘. So whoever wants to eat them, let him cook them to death. The reason why the Prophet (blessings and peace of Allah be upon him) forbade that at Khaybar is mentioned in a report narrated in Sahih Muslim from Abu Sa‘id al-Khudri (may Allah be pleased with him), who said: No sooner had Khaybar been conquered but we, the companions of the Messenger of Allah (blessings and peace of Allah be upon him) began to eat garlic, because the people were hungry, and we ate a large amount of it. Then we went to the mosque, and the Messenger of Allah (blessings and peace of Allah be upon him) noticed the smell, so he said: “Whoever has eaten anything of this evil plant, let him not come near us in the mosque.” The people said: It has been prohibited, it has been prohibited. News of that reached the Prophet (blessings and peace of Allah be upon him), so he said: “O people, it is not for me to prohibit something that Allah has permitted to me, but it is a plant of which I hate the smell.” By analogy, we may say that this also applies to gatherings for prayers that are held in places other than the mosque, such as the places in which the Eid prayer and funeral prayer are held, and other gatherings for worship, as well as gatherings for seeking knowledge, dhikr, weddings and the like. But this does not apply to markets and similar places. Included with garlic are onions and leeks, and any other kinds of food and other things that have an unpleasant smell. We may add to that anyone who has halitosis (bad breath) or unpleasant odours coming from wounds. This hadith indicates that it is enjoined to show good manners when attendingplaces where people pray, by making sure to refrain from anything of which the smell could be offensive..