This prayer is taken from Sayyidi Habib Umar bin Hafiz’s collection of prayers using Allah’s beautiful names in which he calls upon Allah by His beautiful names and then asks Him to bestow prayers upon His Beloved by those names. Finally, he asks Allah for a portion of those attributes which belong to Allah and which He has bestowed upon His Messenger ﷺ.
اللَّهُمَّ يا اللهُ يا وَهَّابُ صَلِّ على عَبْدِكَ و حَبِيبِكَ سَيِّدِنا مُحَمَّدٍ النَّبِيِّ مِفْتَاحِ بَابِ المَواهِب و على آلِهِ و صَحْبِهِ و سَلِّمْ تَسْلِيماً و هَبْ لِي بِهِ من مَوَاهِبِكَ ما أَنْتَ أَهْلُهُ فَضْلاً و إِحْسَاناً
Allāhumma yā Allāhu yā Wahhābu ṣalli ‘alā ‘abdika wa ḥabībika sayyidinā Muḥammad an-nabī miftāḥi bābi al-mawāhib wa ‘alā ālihi wa ṣaḥbihi wa sallim taslīman wa hab lī bihi min mawāhibika mā anta ahluhuh faḍlan wa iḥsāna
O Allah, O Bestower, bestow abundant prayers and peace upon Your slave and beloved, our Master Muhammad, the Prophet, the key to the door of Your gifts and upon his Family and Companions, and by him bestow upon me Your gifts as only You are worthy of doing, out of Your bounty and kindness.