Hadith 3487
Abu Bakr bin Abdur Rahman narrates: Sayyida Aisha Siddiqa (may Allah be pleased with her) and Sayyida Umm Salama (may Allah be pleased with her), these are the pure wives of the Prophet Muhammad (peace be upon him). They informed me that sometimes the Prophet Muhammad (peace be upon him) would be in a state of major ritual impurity (janabah) at the time of true dawn due to having been with his wife, then he would perform ghusl (ritual bath) and observe the fast.