Musnad Abu Ya'la al-Mawsili 171:1

Muhammad ibn Abdullah ibn Numayr narrated to us, Abdullah ibn Idris narrated to us, from Husayn, from Amir, from Urwah al-Bariqi, who attributed it to the Prophet (ﷺ), he said: "Camels are honor for their owners, and sheep are a blessing, and goodness is tied to the forelocks of horses."