Great good is attached to the forelock of the horses until the Day of Judgment. (Using translation from Muslim 1873a)  

قَالَ رَسُولُ اللَّهِ ﷺ الْخَيْلُ مَعْقُودٌ بِنَوَاصِيهَا الْخَيْرُ إِلَى يَوْمِ الْقِيَامَةِ الْأَجْرُ وَالْمَغْنَمُ  

Great good is attached to the forelock of the horses until the Day of Judgment. (Using translation from Muslim 1873a)  

قَالَ رَسُولُ اللَّهِ ﷺ «الْخَيْلُ مَعْقُودٌ فِي نَوَاصِيهَا الْخَيْرُ إِلَى يَوْمِ الْقِيَامَةِ الْأَجْرُ وَالْمَغْنَمُ»