He said he asked the Prophet about a man who prays sitting, and he replied, “If he prays standing that is more excellent; but one who prays sitting has half the reward of one who stands, and one who prays lying down has half the reward of one who sits.”
‘Imran b. Husain reported God’s Messenger as saying, “Pray standing, but if you are unable, do it sitting; and if you are unable to do that, do it lying on your side.”
Abu Umama told of his hearing God’s Messenger say, “If anyone goes to bed in a state of purity and makes mention of God till drowsiness overtakes him, he will not turn round at any time during the night and ask God at that time for some of the good of this world and the next without His giving it to him.”
Nawawi mentioned it in Kitab al-adhkar by the transmission of Ibn as-Sunni.
‘Umar reported God’s Messenger as saying, “Should anyone fall asleep and fail to recite his portion of the Qur’an or a part of it, if he recites it between the dawn and the noon prayer it will be recorded for him as though he had recited it during the night.”