Salawat As-Sayyidi GrandShaykh Sultan Ul Awliya Mawlana Shaykh Nazim Haqqani used to sing
الْلَهُمَّ صَلِّ وَسَلِّم عَلَى نَبِيِّنا مُحَمَّد عَلَيْهِ السَّلام صَلَاةً تَدُومُ وَتُهْدَى إِلَيْه مَا مَرَّ الْلَيَالِي وَطُولَ الدَوَامْ
Allahuma salli wa sallim ala Nabiyina Muhammadalayhis-salaam. Salaatan tadoomu wahtoohda `ilayh ma marral-layaali wa toolad-dawaam.
O Allāh ﷻ! Pray and send peace on our Prophet Muhammad ﷺ, upon him ﷺ be peace! Praises everlasting, to which all are guided, as long as the nights and as long as the days!