And Qutaybah ibn Sa'id narrated to us, from Layth, from 'Uqayl, from al-Zuhri, from 'Urwah, from 'A'ishah — may Allah be pleased with her — that the Prophet, peace and blessings be upon him, used to observe i'tikaf during the last ten days of Ramadan until Allah, Mighty and Majestic, took him in death. Then his wives observed i'tikaf after him.