" الْخَيْلُ مَعْقُودٌ فِي نَوَاصِيهَا الْخَيْرُ إِلَى يَوْمِ الْقِيَامَةِ الأَجْرُ وَالْمَغْنَمُ "
It was narrated from 'Urwah bin Abi Al-Ja'd that he heard the Prophet say: "Goodness is tied to the forelocks of horses until the Day of Resurrection: Reward and spoils of war."