What is the ruling on praying in a mosque next to the imam's house, where there is a grave or two graves under the house, and how do you advise the imam?

Question:
There is a mosque in a village, and this mosque is small. In front of this mosque is the imam's house, which is several meters away from the mosque. We heard that under this house where the imam lives, we heard that there is a grave or two graves underneath it, knowing that the graves were there before the house was built. We ask you now, if you would be so kind, what is the ruling on praying in our mosque? And how do you advise this imam, and what should he do about his house? May Allah reward you with good.

Answer:
If the house is separate from the mosque and the mosque is free of graves, if the mosque is free of graves and the house is separate from the mosque that you claim contains graves, then there is nothing wrong with praying in the mosque and no prohibition in it. However, if it is confirmed that the imam's house was built on graves, then it is obligatory to look into this before the Shari'ah court or before the authorities who handle Shari'ah rulings, so that they investigate and verify this claim. If this house was built on graves, the house must be removed and the graves left as they are, because they preceded to this place and were buried there. It is not permissible for anyone to encroach upon them and build over them, or to encroach upon their graves and make them a path. Graves have a sanctity. The Messenger (peace and blessings be upon him) said: The sanctity of a Muslim after his death is like his sanctity while he is alive. Yes.