Sahih Bukhari, Chapter: Characteristics of Prayer

The Prophet said, "Whoever eats garlic or onion should keep away from our mosque or should remain in his house." (Jabir bin 'Abdullah, in another narration said, "Once a big pot containing cooked vegetables was brought. On finding unpleasant smell coming from it, the Prophet asked, 'What is in it?' He was told all the names of the vegetables that were in it. The Prophet ordered that it should be brought near to some of his companions who were with him. When the Prophet saw it he disliked to eat it and said, 'Eat. (I don't eat) for I converse with those whom you don't converse with (i.e. the angels)."