Urwah al-Bariqi (may Allah be pleased with him) says: I heard the Messenger of Allah (peace and blessings be upon him) say: "Goodness has been tied to the forelocks of horses until the Day of Resurrection: reward and spoils."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب قسم الفيء والغنيمة / 12889