وعن أبي أمامة قال قال رسول الله صلى الله عليه وسلم إن أولى الناس بالله من بدأهم بالسلام (سنن أبي داود #5197)

Hazrat Abu Umaamah (radhiyallahu ‘anhu) reports that Rasulullah (sallallahu ‘alaihi wasallam) said, “The one who makes salaam to other people first is the closest of them to (receiving the mercy and forgiveness of) Allah Ta‘ala (in exchange of this action of initiating salaam).”