Abu Dawud Book 2, Hadith Number 831.
Chapter : Not known.
Narated By Abdullah ibn AbuAwfa : A man came to the Prophet (PBUH) and said: I cannot memorise anything from the Qur’an: so teach me something which is sufficient for me. He said: Say Glory be to Allah, and praise be to Allah, and there is no god but Allah, and Allah is most great, and there is no might and no strength but in Allah.
:He said: Apostle of Allah, this is for Allah, but what is for me? He said: Say: O Allah have mercy on me, and sustain me, and keep me well, and guide me. When he stood up, he made a sign with his hand (indicating that he had earned a lot).
The Apostle of Allah (PBUH) said: He filed up his hand with virtues.