Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) said: The Muslims captured one of the leading men of the polytheists and killed him. The polytheists asked them to sell him (his body), and the Prophet (peace and blessings be upon him) forbade "selling the carcass of a polytheist".
Hadith Referenceالسنن الكبرى للبيهقي / كتاب السير / 18355
Miqsam narrates from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) that a man of the polytheists was killed in the Battle of the Confederates (Ahzab), and the polytheists sent word to the Prophet (peace and blessings be upon him): Return his body to us and we will give you twelve thousand. He (peace and blessings be upon him) said: "There is no good in his body nor in its price."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب السير / 18356