What is the method of the Salaf in congratulating one another on the festival?

Question:
What is the ruling on embracing when congratulating one another on the festival? And how did the righteous Salaf congratulate one another on the festival?

Answer:
Congratulating one another on the festival. There is no clear evidence for it; rather, people have become accustomed to it, and it may fall under spreading the salam, which the Prophet (peace and blessings be upon him) commanded. It is a type of salam, and on this occasion, one makes the supplication, "May Allah accept from us and from you." His brother then responds to him in the same way, just as he supplicated. So one does not disapprove of the one who does it, nor does one disapprove of the one who leaves it off. Imam Ahmad (may Allah have mercy on him) said, "I do not initiate it with anyone, but I respond to the one who initiates it with me." Yes.