It was narrated that Isma’il bin Abu Khalid said: “I saw Abu Kahil, and he was a Companions, and my brother narrated to me that he said: ‘I saw the Prophet (ﷺ) delivering the sermon atop his she-camel, and an Ethiopian was holding onto its reins.’”
HasanHasanIsnaad HasanBook 5 · Hadith 482