Musnad Ahmad 32:1854

Ishaq ibn Ibrahim al-Razi narrated to us, Salama ibn al-Fadl narrated to us, he said: Muhammad ibn Ishaq narrated to me, from Abd al-Aziz ibn Muslim, from Ibrahim ibn Ubayd ibn Rifa'ah, from Anas ibn Malik, he said: The Messenger of Allah, peace and blessings of Allah be upon him, passed by Abu Ayyash Zayd ibn Samit al-Zuraqi while he was praying, and he was saying: "O Allah, I ask You by the fact that to You belongs all praise, there is no god but You, O Bestower (al-Mannan), O Originator of the heavens and the earth, O Possessor of Majesty and Honor." The Messenger of Allah, peace and blessings of Allah be upon him, said: "He has called upon Allah by His Greatest Name, which, if He is called by it, He answers, and if He is asked by it, He gives."