Re: milaad
because the Deen was passed on to us like this, from Muhammad
to Sahabah raziallaho anhum, from them to Tabaeen, and Taba Tabaee, rahimohum allah ta’la, and then from them to aima karam and like that… plus, Quran explicitly orders us to follow Muhammad :saw: and “wallazeena ma’a hu” that is people with him, and those are “Sahaba”…