Muwatta Malik

Yahya related to me from Malik from Zayd ibn Aslam that Amr ibn Rafi said, ""I was writing a Qur'an for Hafsa, umm al-muminin, and she said, 'When you reach this ayat, let me know, ""Guard the prayers carefully and the middle prayer and stand obedient to Allah."" When I reached it I told her and she dictated to me, 'Guard the prayers carefully and the middle prayer and the asr prayer and stand obedient to Allah