Mukhtasar Muslim

Abu Huraira (may Allah be pleased with him) reports that the Messenger of Allah (peace and blessings of Allah be upon him) said one day after leading the prayer: "O so-and-so! Why do you not perform your prayer properly? Does the one who prays not see how he is praying? Indeed, he prays for his own benefit. By Allah, I see those behind me just as I see those in front of me."