When the wall fell on them (i.e. graves) during the caliphate of Al-Walid bin `Abdul Malik, the people started repairing it, and a foot appeared to them. The people got scared and thought that it was the foot of the Prophet. No one could be found who could tell them about it till I (`Urwa) said to them, "By Allah, this is not the foot of the Prophet (ﷺ) but it is the foot of `Umar."
Sahih al-Bukhari Book 23, Hadith 144
← Previous Hadith Sufyan at-Tammar told me that he had seen the grave of the Prophet (ﷺ) elevated and convex.

Sahih al-Bukhari Book 23, Hadith 143 Next Hadith → Aisha narrated that she made a will to `Abdullah bin Zubair, "Do not bury me with them (the Prophet (ﷺ) and his two companions) but bury me with my companions (wives of the Prophet (p.b.u.h) ) in Al-Baqi as I would not like to be looked upon as better than I really am (by being buried near the Prophet)."

Sahih al-Bukhari Book 23, Hadith 145