"Whoever sends blessings upon me once, Allah sends blessings upon him ten times." III. Spiritual and Personal Benefits

Search for "virtues of sending blessings." If you'd like to refine this, tell me:

"Indeed, Allah and His angels send blessings upon the Prophet. O you who have believed, ask [Allah to confer] blessing upon him and ask [Allah to grant him] peace" (33:56).

It fosters a deeper love for the Prophet Muhammad.