He, sallallaahu 'alayhi wa sallam, corrected their acts of worship:

"I slept at my aunt Maymoonah's home, (the wife of the Prophet of Allah,) so the Prophet of Allah, sallallaahu 'alayhi wa sallam, relieved himself, then washed his hands and face and slept for a while. When he, sallallaahu 'alayhi wa sallam, woke up he went to the container of water and opened it and performed ablution using little water, but it was sufficient, then he prayed. I got up (to pray with him) and stretched my body, so that he wouldn'tknow I had been watching him, then I performed ablution and stood on his left side, so the Prophet of Allah, sallallaahu 'alayhi wa sallam, took me by my ear and made me stand aligned to him on his right side."