Al-Hijr 15:52

Ith dakhaloo AAalayhi faqaloosalaman qala inna minkum wajiloon

When they entered upon him and said, "Peace." [Abraham] said, "Indeed, we are fearful [i.e., apprehensive] of you."

When they visited him, they greeted him with Salām (peace on you). He said, “We are scared of you.”