Is it prescribed to make du'a' (supplication) at the grave of the deceased after burial, where one of us makes the du'a' and the others say "Ameen"?

Question:
He says: After we bury the deceased, we stand at the grave and ask Allah (Glorified and Exalted is He) for his forgiveness and mercy. We all raise our hands, one of us makes the du'a' aloud, and the others say "Ameen." Please inform us about this matter: is it a bid'ah (religious innovation), or is it a valid matter?

Answer:
What is reported from the Prophet (peace and blessings be upon him) regarding the deceased, once they have finished burying him, is that they stand at his grave, seek forgiveness for him, and ask for his steadfastness. He said (peace and blessings be upon him) . This is not to be done with a collective voice, or with one person making du'a' and the rest saying "Ameen." This is not prescribed. Rather, what is prescribed is for each one of those present to make du'a' for the deceased himself, without being tied to a collective voice or following one caller while they say "Ameen." All of this is contrary to the evidence. Yes.