hadess e mubarak

Jibrail (alaihissalam) once came to prophet (s.a.w.s) n said Allah has given me the knowledge to count every leaf on earth, every fish in the sea, every star in the sky and every particle of sand on earth, but there's only 1 thing I cant count. Prophet (s.a.w.s) asked Jibrail {a.s} what is it? Jibrail (a.s) replied..... When 1 of your Ummah recites Durood or salaams to you the blessing Allah showers upon him becomes impossible 4 me to count. Subhan Allah. I request u to read Durood at least once now