Ata bin Yasar narrates from Sayyiduna Abu Sa'id al-Khudri (may Allah be pleased with him) that a man of the Ansar had a she-camel near Mount Uhud; it began to die, so he performed nahr on it with a wooden peg. The Prophet (peace and blessings be upon him) was asked about eating it, and he (peace and blessings be upon him) "gave permission to eat it."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الضحايا / 19150