Musannaf Ibn Abi Shaybah 34675 — Reports on Banu Abs

Mas'ud bin Hirash (may Allah have mercy on him), the brother of Rib'i bin Hirash (may Allah have mercy on him), said that Sayyiduna Umar bin al-Khattab (may Allah be pleased with him) asked the people of Banu Abs: "Which horse do you find most enduring in your wars?" They said: "The black-and-red horse (kumayt)."