‘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.”
‘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.”
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.”
Abu Huraira reported God’s Messenger as saying, “The religion is ease, but if anyone overdoes it it gets the better of him; so keep to the right course, approximate to perfection, rejoice, and ask help in the morning, the evening, and some of the latter part of the night.”