Source: SeekersGuidance blog
This beautiful intention for salawat/darud (send blessings) on the Prophet Muhammad (Allah’s blessings and peace be upon him) has been narrated from the venerable Imam Hadad (Allah’s mercy be upon him):
O God, I intend by my sending blessings upon the Prophet صلى الله عليه و سلم fulfilling Your command, and professing belief in Your book, and following the way of Your Prophet, our liege lord صلى الله عليه و سلم Muhammad and (declaring) love for him, yearning for him and venerating his right and to ennoble
him, and due to the fact that he is deserving of that صلى الله عليه و سلم, so accept this from me by virtue of Your grace and excellence.Remove the veil of heedlessness from my heart, and make me from the righteous. O God, increase him in eminence beyond the eminence with which You have preferred him, and increase him in honour beyond the honour which You have given him صلى الله عليه و سلم, and raise his station in the stations of the Emissaries, and raise too his level in the levels of the Prophets.I ask of You Your Divine pleasure and for Paradise, O Lord of Creations, with well-being in religious and worldly life and in the Hereafter.I ask of You death upon the Book, the Prophetic Way and Community and upon the testament of faith, without change or alteration.
By Your grace and excellence towards me, forgive me for what I have sinned. Indeed You are the Oft- Returning, the Most Merciful, and may God send blessings upon our liegelord Muhammad صلى الله عليه و سلم and on his folk and his Companions.