Prayer in mosques that contain graves, and the grave of the Prophet in the mosque

Question:
Honorable Shaykh, what is your view of those who say that the Prophet (peace and blessings be upon him) forbade prayer in mosques that contain graves, but how can he forbid it when the grave of the Prophet (peace and blessings be upon him) is inside the mosque?

Answer:
So it is inside the mosque. I think the Prophet (peace and blessings be upon him) was in his house, and his house was outside the mosque. So, according to what you say, the one who incorporated the chamber into the mosque was al-Walid ibn 'Abd al-Malik, after the passage of the Rightly Guided Caliphs and the passage of the Companions. He did this based on an opinion he held, and the scholars did not agree with him. And the grave of the Messenger is not in itself [part of the mosque], but rather it is in his house (peace and blessings be upon him).