Yazid bin Zari' يزيد بن زريع · The Book of Leading the Prayer (Al-Imamah)

"The Messenger of Allah (ﷺ) came to our house and I prayed with an orphan of ours behind him, and Umm Sulaim prayed behind us."

"The Messenger of Allah (ﷺ) prayed one day then left and said: '0 so-and-so, why don't you improve your prayer? Shouldn't the one who is praying reflection how he prays it for himself? I can see behind me just as I can see in front of me."'