It is narrated from Hazrat Anas (may Allah be pleased with him) that he said: Hazrat Abu Bakr (may Allah be pleased with him) was delivering a sermon to us. When he mentioned the beginning of the creation of man, he said: Man has been created from the foul smell of the urinary passage. Hazrat Abu Bakr (may Allah be pleased with him) continued mentioning this until each one of us began to consider himself impure.