It is narrated from Hazrat Umm Salamah (may Allah be pleased with her) that once the Prophet (peace and blessings be upon him) was in her house when Hazrat Fatimah came carrying a pot in which there was khazirah. The Prophet (peace and blessings be upon him) said to her, "Call your husband and children as well." So Hazrat Ali and Hasan and Husain also came, and they sat down and began to eat the khazirah. At that time, the Prophet (peace and blessings be upon him) was in a state of sleep on a platform, and under his blessed body was a sheet from Khaybar, and I was praying in the room. During this, Allah revealed this verse: "O People of the House! Allah only wishes to remove impurity from you and to purify you thoroughly." After this, the Prophet (peace and blessings be upon him) took the remaining part of the sheet and covered all of them with it, and he took his hand out and pointed towards the sky and said, "O Allah, these are my family and my close ones, so remove impurity from them and purify them thoroughly." He prayed this twice. Upon this, I put my head into the room and said, "O Messenger of Allah, am I not with you?" The Prophet (peace and blessings be upon him) said, "You are also upon goodness, you are also upon goodness." The previous hadith is also narrated from this second chain.