Amr bin Hisham عمرو بن هشام · The Book of Purification

"I entered upon 'Aishah and asked her: 'Did the Messenger of Allah (ﷺ) perform Ghusl at the beginning of the night or at the end?' She said: 'Both. Sometimes he performed Ghusl at the beginning and sometimes at the end.' I said: 'Praise be to Allah who has made the matter flexible.'"

"The Messenger of Allah (ﷺ) sent Usaid bin Hudair and some other people to look for a necklace that 'Aishah had left behind in a place where she had stopped (while traveling). The time for prayer came and they did not have Wudu', and they could not find any water, so they prayed without Wudu'. They mentioned that to the Messenger of Allah (ﷺ), and Allah, the Mighty and Sublime revealed the verse of Tayammum. Usaid bin Hudair said: 'May…