Musnad Ahmad 26:210

Mu'awiyah ibn 'Amr narrated to us, Za'idah narrated to us, al-Rukayn narrated to us, from Abu 'Amr al-Shaybani, from a man of the Ansar, from the Prophet, peace and blessings of Allah be upon him, who said: "Horses are of three types." Then he mentioned the hadith.