The ruling on placing green palm fronds on graves

Question:
He says: Honorable Shaykh, may Allah grant you success, in our country, when visiting the graves, some people place green palm fronds on the grave, and they say that this is from the Sunnah. Is this permissible? They cite the action of the Prophet (peace and blessings be upon him) when he passed by the two being tormented in the grave.

Answer:
This is not permissible, and it is a bid'ah (religious innovation), not a Sunnah. It is not permissible to stick a palm frond or a tree into the grave of a deceased person, because this is what the Prophet (peace and blessings be upon him) did only once with two graves. He passed by them and said then he ordered a palm frond to be split, and he placed a split piece of the frond on each of the two graves This is specific to the Messenger (peace and blessings be upon him), because Allah revealed to him the conditions of the dead. As for us, we know nothing about the dead, so we do not do this, because this is specific to the Messenger (peace and blessings be upon him). Also, the Messenger did not do this except this one time; he did not make it a habit with every deceased person. Also, the Companions never did it; they never did it at all. If they had known that this was a Sunnah, they would have done it after the death of the Messenger (peace and blessings be upon him). So this is a bid'ah and is not permissible. What is required is to make du'a' (supplication) for the deceased, seek forgiveness for him, and offer the salam to him, and this is sufficient.