عَنْ سَلَمَةَ بْنِ الْأَكْوَعِ الْأَسْلَمِيِّ رَضِيَ اللَّهُ عَنْهُ قَالَ مَا سَمِعْتُ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ يَسْتَفْتِحُ دُعَاءً إِلَّا اسْتَفْتَحَهُ بِسُبْحَانَ رَبِّيَ الْأَعْلَى الْعَلِيِّ الْوَهَّابِ
It is narrated from Sayyiduna Salamah bin Akwa’ (may Allah be pleased with him), he says: I heard that whenever the Messenger of Allah (peace and blessings be upon him) began to supplicate, he would start with these words: Subhana Rabbi al-A’la al-‘Aliyy al-Wahhab (Glory is to my Lord, the Most High, the Exalted, the Bestower).