Reference: http://mufti.af.org.sa/ar/content/هل-يجب-تبليغ-السلام-إذا-قال-شخص-أقرئ-فلاناً-مني-السلام
Question: If one of them requests that I convey their ‘salaam’[1] to someone I know, then am I obligated to do that?
Response: He has entrusted you with a request, so you must fulfill it. When he said[2]:
convey my ‘salaam’ to such-and-such
…and you replied[3]:
yes, I will convey it in shaa.-Allaah
…then it is required of you to fulfill the trust of [conveying] the ‘salaam’, and carry it to the [intended] recipient and say[4]:
such-and-such conveys his ‘salaam’ [to you]
Translator’s note:
[1] The greeting of “as-salaam ‘alaykum”.
[2, 3 and 4] Or words to that effect.