Musannaf Ibn Abi Shaybah

It is narrated from Hazrat Ibn Abbas (may Allah be pleased with them both) that: On the day of the Trench, some disbelievers were killed, and the Muslims gained dominance over the bodies of the disbelievers. The polytheists said to the Muslims, "Hand over our corpses to us, and in return we will give you ten thousand dirhams." This was mentioned to the Noble Prophet (peace and blessings be upon him), so he (peace and blessings be upon him) said: "We have no need of your corpses (dead bodies) nor of the blood money. This is filthy blood money and filthy corpses."