Is there a basis in the Shari'ah for designating a specific grave if the intention is to visit it in the future?

The questioner:
We say: Honorable Shaykh, may Allah grant you success, is there a basis in the Shari'ah for designating the grave of a relative, whether a mother, father, or otherwise? Is there a basis in the Shari'ah for designating the grave of a relative, whether a mother, father, or otherwise, if the intention is to visit them in the future?

The Shaykh:
Yes, there is nothing wrong with that. This is a good intention: it is to know these graves so that he can visit them, greet them, and make du'a' for them. This is a good intention, and there is nothing wrong with it. It was reported that the Prophet (peace and blessings be upon him) placed a stone on the grave of Uthman ibn Maz'un so that he could recognize it for his visits. Yes.

The presenter:
Yes, yes.

The questioner:
He says: Honorable Shaykh, may Allah grant you success.

The Shaykh:
But he should not place anything on it that is read, or any writing, or write his name on it, or put a number on it. The Prophet (peace and blessings be upon him) forbade writing on graves, so he should not write on it. If he places something on it that only he knows, such as a mark, a stick, or something that only he knows, there is nothing wrong with it. Yes.