Sunan Ibn Majah, Volume 4, Book 24, Hadith 2787 (DarusSalam) ⓘ
It was narrated from ‘Abdullah bin ‘Umar that the Messenger of Allah said: “There is goodness in the forelocks of horses until the Day of Resurrection.”
حَدَّثَنَا مُحَمَّدُ بْنُ رُمْحٍ، أَنْبَأَنَا اللَّيْثُ بْنُ سَعْدٍ، عَنْ نَافِعٍ، عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ، عَنْ رَسُولِ اللَّهِ صلى الله عليه وسلم أَنَّهُ قَالَ " الْخَيْلُ فِي نَوَاصِيهَا الْخَيْرُ إِلَى يَوْمِ الْقِيَامَةِ " .
also referenced under: Hadith 2787 (Reference) & Book 24, Hadith 2893 (In-Book)