It is narrated from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) that the Prophet (peace and blessings be upon him) passed by a dead goat belonging to a freed slave of Sayyidah Maymunah (may Allah be pleased with her), and he (peace and blessings be upon him) said: "Why did you not remove its skin? You could have tanned it and benefited from it." The Companions (may Allah be pleased with them) said: O Messenger of Allah! It is a dead animal. He (peace and blessings be upon him) said: "Only eating its (meat) is unlawful."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الطهارة / 45