Fath al-Rabbani

It is narrated from Sayyiduna Anas (may Allah be pleased with him), he says: I was sitting in a gathering with the Messenger of Allah (peace and blessings be upon him), and at the same time, a man stood up and began to pray. When he had performed the bowing (ruku‘) and prostration (sajdah), and sat and recited the tashahhud, then he made this supplication: "O Allah! Indeed, I ask You... Indeed, I ask You (O Allah! Verily, I ask You on the basis that all praise is for You, You alone are the True Deity, You are One, You have no partner, You are Most Merciful, O Originator of the heavens and the earth! O Possessor of Majesty and Honor! O Living! O Sustainer! Indeed, I ask You.)" The Prophet (peace and blessings be upon him) said: "Do you know what this man has supplicated with?" The people said: "Allah and His Messenger know best." The Prophet (peace and blessings be upon him) said: "By Him in Whose hand is my soul! He has supplicated to Allah with His Greatest Name, which, when He is called upon by it, He responds, and when He is asked by it, He gives."