Jibrail (Alaihi Salaam) once came to Prophet (Salallahu alayhi wa Sallam / peace be upon him) and said:
Allah (subhanahu wa ta'ala) 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 is 1 thing I cannot count.
The Prophet (Salallahu alayhi wa Sallam) asked Jibrail (Alaihi Salaam), What is it?
Jibrail (Alaihi Salaam) replied, When one of your Ummah recites Durood or salaams to you, the
blessing Allah showers upon him becomes impossible for me to count.
** Please read durood regularly in'sha'Allah and recieve many many rewards in this world and the hereafter