Hazrat Jibrail [Alayh Salam] once came to Prophet Muhammad صلی اللہ علیہ وآلہ وسلم 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's only 1 thing I cant count." Prophet صلی اللہ علیہ وآلہ وسلم asked Jibrail(Alayh Salam) "What is it?" Jibrail(A.S) replied, "When one of Your(صلی اللہ علیہ وآلہ وسلم )Ummati recites Durood or Salaams to You (صلی اللہ علیہ وآلہ وسلم ), the blessings Allah (Subhana Wa Ta'ala) showers upon him becomes impossible for me to count." SubhanAllah