Musannaf Ibn Abi Shayba 16:673

Abu Bakr narrated to us, he said: Ubayd Allah narrated to us, he said: Isra'il narrated to us, from Abu Ishaq, from 'Amr ibn Maymun, he said: Abu Musa performed Hajj upon a red camel, his head matted, wearing a cloak of his.