That the Messenger of Allah ﷺ said: "Goodness will remain in the forelocks of horses until the Day of Judgement: (They bring about) Rewards and spoils of war."  

قَالَ رَسُولُ اللَّهِ ﷺ الْخَيْرُ مَعْقُودٌ فِي نَوَاصِي الْخَيْلِ إِلَى يَوْمِ الْقِيَامَةِ الأَجْرُ وَالْمَغْنَمُ