Abu Bakr ibn Abi Shaybah and Ishaq ibn Ibrahim narrated to us. Abu Bakr said: Isma'il ibn 'Ulayyah narrated to us, from al-Walid ibn Abi Hisham, from Abu Bakr ibn Muhammad, from 'Amrah, from 'A'ishah, who said: The Messenger of Allah (peace and blessings be upon him) used to recite while sitting, and when he wanted to bow, he would stand for as long as it takes a person to recite forty verses.