❝Abu ‘Abdillah Ahmad b. Hanbal (r) was asked about a man who walks past a group of people and gives them Salam but none of them return his Salam.
He (r) replied, “The man should walk faster so that he isn’t affected by the curse (that is about to befall them).”❞
— Mufti of the Hanabilah of Damascus, Musa al-Hajjawi (r)
[This is in reference to the sin these people have committed by not returning the Salam]
This answer was collected from The Hanbali Madhhab website. The answers to the questions are given by Imam Zahed Fattah in accordance to the Hanbali School of Jurisprudence.