It is narrated from Hazrat Hafsa that when the Prophet (peace be upon him) would come to his bed, he would lie down placing his right hand under his right cheek, and it was the practice of the Prophet (peace be upon him) to use his right hand for eating, drinking, performing ablution, wearing clothes, and giving and taking, and for other occasions he would use his left hand, and he used to fast on Mondays and Thursdays.