Narrated Sa'd reported God’s messenger as saying that no Muslim will supplicate God for anything and fail to receive an answer when he uses Dhun Nun’s supplication when he was in the belly of the fish:
“There is no god but Thee to whom be the glory. I was indeed a wrongdoer.”
Asma’ daughter of Yazid reported the Prophet as saying, “God’s greatest name is in these two verses, ‘And your God is one God; there is no god but He, the Compassionate, the Merciful’ ”
Tirmidhi, Abu Dawud, Ibn Majah and Darimi transmitted it.
Buraida said that once when he entered the mosque with God’s messenger at the time of the evening prayer a man was reciting with a loud voice, so he asked God’s messenger whether he thought the man was hypocritical, but he replied’ “No, he is a penitent believer.” He said that Abu Musa al-Ash‘ari was * reciting in a loud voice, and God’s messenger began to listen to his recitation. Afterwards Abu Musa sat down and engaged in supplication saying, “O God, I call Thee to witness that Thou art God than whom there is no god, One, to whom men repair, who hast not begotten and hast not been begotten, and to whom no one is equal.” God’s messenger then said, “He has asked God using His name when asked by which He gives, and when supplicated by which He answers.” Buraida asked God’s messenger whether he should tell him what he had heard him say, and when he agreed he told him what God’s messenger had said, and Abu Musa said to him, “Today you are a true brother to me, having told me the words of God’s messenger.”
*This word is not in the text, but Mirqat explains that it must be understood as Abu Musa as not the man referred to above.
Anas said that when he was sitting with the Prophet in the mosque a man who was praying said, “O God, I ask Thee by virtue of the fact that praise is due to Thee than whom there is no god, who showest favour and beneficence, the Originator of the heavens and the earth, O Lord of Majesty and Splendour, O Living One; O Eternal One, I ask of Thee.” The Prophet then said, “He has supplicated God using His greatest name, when supplicated by which He answers and when asked by which He gives.”
Tirmidhi, Abu Dawud, Nasa’i and Ibn Majah transmitted it.
