Buraida told that God’s messenger heard a man saying, “O God I ask Thee by virtue of Thy being God than whom there is no god, the One, He to whom men repair, who has not begotten and has not been begotten, and to whom no one is equal,” and said, “He has supplicated God using His greatest name, when asked by which He gives and when supplicated by which He answers.” Tirmidhi and Abu Dawud transmitted it.
Source: sunnah.com
Other translations
Arabic
وَعَن بُرَيْدَةَ: أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ سَمِعَ رَجُلًا يَقُولُ: اللَّهُمَّ إِنِّي أَسْأَلُكَ بِأَنَّكَ أَنْتَ اللَّهُ لَا إِلَهَ إِلَّا أَنْتَ الْأَحَدُ الصَّمَدُ الَّذِي لَمْ يَلِدْ وَلَمْ يُولَدْ وَلَمْ يَكُنْ لَهُ كُفُوًا أَحَدٌ فَقَالَ: «دَعَا اللَّهَ بِاسْمِهِ الْأَعْظَمِ الَّذِي إِذَا سُئِلَ بِهِ أَعْطَى وَإِذَا دُعِيَ بِهِ أَجَابَ» . رَوَاهُ التِّرْمِذِيُّ وَأَبُو دَاوُد
sunnah.com