Musannaf Ibn Abi Shaybah

Hazrat Masood bin Harash, may Allah have mercy on him, who is the brother of Hazrat Rubee’ bin Harash, may Allah have mercy on him, narrates that Hazrat Umar, may Allah be pleased with him, asked the people of the tribe of Abs: “Which horse do you find to be the most courageous in your battles?” They replied: “The horse that is red and black in color, or a bay-colored horse.”