Digging up graves

Ibn Sirin said: Sayyiduna Zayd bin Thabit (may Allah be pleased with him) asked Sayyiduna Uthman (may Allah be pleased with him) for permission to dig up the graves that were in the mosque of the Prophet (peace and blessings be upon him). He gave him permission, so he dug up those graves and removed them from the mosque (and buried them elsewhere). Those graves had been left in the mosque only because the people had very little soft land.

It is narrated from Sayyiduna Anas (may Allah be pleased with him) that the mosque of the Prophet (peace and blessings be upon him) belonged to Banu al-Najjar. The Prophet (peace and blessings be upon him) said to them: "Take its price from me." They said: "We seek its price only from Allah Almighty." In it there were graves of the polytheists, date palms and cultivated land. He (peace and blessings be upon him) ordered that the cultivation be cut down, the palms be cut, and the graves be dug up.

Qays said: On the Day of the Camel, Marwan shot Sayyiduna Talhah (may Allah be pleased with him) in the knee with an arrow, and he was martyred by it. He was buried in Basra (on the bank of al-Kalla'). One of his family saw him in a dream, and he said: "Will you not relieve me of this water? I am drowning." He said this three times. So they dug up that grave, bought for him one of the houses of the family of Sayyiduna Abu Bakrah (may Allah be pleased with him) for ten thousand, and buried him in it.