Yahya related to me from Malik from Hisham ibn Urwa from his father from A'isha umm al-muminin that the Messenger of Allah, may Allah bless him and grant him peace, mentioned Safiyya bint Huyy and he was told that she had started her period. The Messenger of Allah, may Allah bless him and grant him peace, said, "Perhaps she will delay us." They said, "Messenger of Allah, she has done tawaf," and the Messenger of Allah, may Allah bless him and grant him peace, said, "Then she will not delay us." Malik said that Hisham said that Urwa said that A'isha said, "We have publicized that, so why do people make their women stay on to their inconvenience? If it were as they say, more than six thousand menstruating women would still be in Mina in the morning, all of them having already done the tawaf al- ifada.' "