It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that a goat belonging to Sayyidah Maymunah (may Allah be pleased with her) died. The Prophet (peace and blessings be upon him) said: "Why did you not benefit from its skin?" She said: "It is dead (carrion)." The Prophet (peace and blessings be upon him) said: "Tanning purifies the skin."