A word from some of the brothers regarding prayer in a mosque that contains a grave.

Eid Abbasi: ... It was not intended to be venerated, and this specific mosque was not the target; because it contains such-and-such a grave. Rather, he caught up with the prayer and this was the only mosque near him, so he prayed in it. The Shaykh held the view that this is disliked (makruh), and yet he said: the possibility that it is invalid (batil) is not far-fetched, meaning...

Another questioner : ... .

Eid Abbasi: There is no obstacle... What I remember is that it was intended to be disliked (makruh) in the sense of being reprehensible (tanzihi), yes, is that not so? ... Yes?

Another questioner : ... .

Eid Abbasi: Well, it is a lesser degree of prohibition. And, I am currently far from the time of that event. In any case, when I convey what I remember, it is complete that he said: If a person goes or studies the issue and holds the view that it is invalid; then this is also a possibility; meaning the door to invalidity was not closed, but rather it can remain a possibility. This is what pertains to the ruling on praying in it. You will find the seriousness of the issue, and that the Muslim must seek out a mosque that does not contain a grave. This is all part of Islam’s care to keep the sanctity of tawhid (the oneness of Allah) intact and to preserve it, so that it is not touched by the slightest thing that would distort it or cloud its purity.
Now, our brother...