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.
Here he teaches us to ask Allah by His name the Uniter (al-Jami`) and by His Prophet ﷺ to combine for us all good and felicity in this life and the next.
اللَّهُمَّ يا اللهُ يا جَامِع صَلِّ على عَبْدِكَ و حَبِيبِكَ سَيِّدِنا مُحَمَّدٍ النَّبِيِّ الجامِع لِأَسْرَارِكَ و على آلِهِ و صَحْبِهِ و سَلِّمْ تَسْلِيماً واجْمَعْ لي بِهِ بَيْنَ خَيْراتِ و سَعَاداتِ الدَّارَيْنِ واجْمَعْ بِهِ شَمْلي اجْمَعْني بِهِ عَلَيْكَ جَمْعاً
O Allah, O Uniter, bestow abundant prayers and peace upon Your slave and beloved, our Master Muhammad, the Prophet who gathered Your secrets, and upon his Family and Companions, and by him combine for me all the good and felicity of both abodes and unite my affairs and allow me to focus completely upon You.