Musannaf Ibn Abi Shaybah 26209 — The meat of animals that feed

Nafi' narrates concerning Sayyiduna Ibn Umar (may Allah be pleased with them both) that he had some filth-eating camels, so he sent them to the pasture; then he brought them back (after some days), and then he loaded the travellers' baggage on them and sent them off to Makkah.