Muwatta Malik Book 7, Hadith 2
Yahya related to me from Malik from Abu'nNadr, the mawla of Umar
ibn 'Ubaydullah, from Abu Salama ibn Abd ar-Rahman that A'isha, the
wife of the Prophet, may Allah bless him and grant him peace, said, "I
was sleeping in front of the Messenger of Allah, may Allah bless him
and grant him peace, and my feet were in his qibla. When he
prostrated, he nudged me and I pulled up my feet,and when he stood up
I spread them out." She added, "There were no lamps in the house at
that time."
Yahya related to me from Malik from Muhammad ibn al-Munkadir from Said ibn al-Jubayr that a man who has approval (as a relater of hadith), told him that A'isha, the wife of the Prophet, may Allah bless him and grant him peace, said, "If a man prays in the night and sleep overcomes him during it, Allah writes for him the reward of his prayer, and his sleep is sadaqa for him."
Yahya related to me from Malik from Hisham ibn Urwa from his father from A'isha, the wife of the Prophet, may Allah bless him and grant him peace, that the Messenger of Allah, may Allah bless him and grant him peace, said, "If you are drowsy in prayer, sleep until sleep leaves you, because if you pray while you are drowsy, you do not know whether you may intend to ask for forgiveness but (in fact) ask for harm."