Abu Salamah b. ‘Abd al-Rahman b. ‘Awf said:

I asked ‘A’ishah: By what words the Prophetﷺ used to begin his prayer when he stood up at night (to offer tahajjud prayer). She said: When he stood up at night, he began his prayer by saying: O Allah, Lord of Jibra’il, Lord of Mik’ail, and Lord of Israfil, Creator of the Heavens and the Earth, the Knower of what is seen and of what is unseen; Thou decides between Thy servants in which they used to differ. Guide me to the truth where there is a difference of opinion by Thy permission. Thou guidest anyone Thou wishes to the right path.

حَدَّثَنَا ابْنُ الْمُثَنَّى، حَدَّثَنَا عُمَرُ بْنُ يُونُسَ، حَدَّثَنَا عِكْرِمَةُ، حَدَّثَنِي يَحْيَى بْنُ أَبِي كَثِيرٍ، حَدَّثَنِي أَبُو سَلَمَةَ بْنُ عَبْدِ الرَّحْمَنِ بْنِ عَوْفٍ، سَأَلْتُ عَائِشَةَ بِأَىِّ شَىْءٍ كَانَ نَبِيُّ اللَّهِ ﷺ يَفْتَتِحُ صَلاَتَهُ إِذَا قَامَ مِنَ اللَّيْلِ قَالَتْ كَانَ إِذَا قَامَ مِنَ اللَّيْلِ يَفْتَتِحُ صَلاَتَهُ
" اللَّهُمَّ رَبَّ جِبْرِيلَ وَمِيكَائِيلَ وَإِسْرَافِيلَ فَاطِرَ السَّمَوَاتِ وَالأَرْضِ عَالِمَ الْغَيْبِ وَالشَّهَادَةِ أَنْتَ تَحْكُمُ بَيْنَ عِبَادِكَ فِيمَا كَانُوا فِيهِ يَخْتَلِفُونَ اهْدِنِي لِمَا اخْتُلِفَ فِيهِ مِنَ الْحَقِّ بِإِذْنِكَ إِنَّكَ أَنْتَ تَهْدِي مَنْ تَشَاءُ إِلَى صِرَاطٍ مُسْتَقِيمٍ " .