‏الصلاة : Hadeeth No:1718 'A'isha reported Allaah's Prophet (sallAllaahu alayhi wa sallam) as saying: When anyone amongst you dozes in prayer, he should sleep, till sleep is gone, for when one of you prays while dozing he does not know whether he may be asking pardon or vilifying himself....

‏الصلاة : Hadeeth No:1091 Ibn Sa'd reported: I bowed and my hands were in this state, i. e. they were put together, palm to palm, and were placed between his thighs. My father said: We used to do like this but were later on commanded to place them on the knees....