Abu Huraira told how on an occasion when God’s Messenger led them in the noon prayer, there was a man at the back of the rows who performed the prayer badly. When he had said the taslim God’s Messenger called out to him, “So and so, do you not fear God? Do you not see how you should pray? You people think that part of what you are doing is hidden from me, but I swear by God that I see behind me just as I see in front of me." Ahmad transmitted it.