Mu'az bin Jabal relate that one day Rasulullah S.A.W holding his hand while saying, "O Mu'az, by God! I really love you. By God, I really love you. "Then he said," I bequeath to you Mu'az, do not you leave at the end of reading each prayer should you pray, 'O Allah I a'in' ala zikrika syukrika wa wa husni 'ibadatik '(O Allah, help me to remember you, thank you, and serve with good to you). "(Abu Dawud)
