Virtues and Merits of the Prophet (pbuh) and his Companions
حَدَّثَنَا قَيْسُ بْنُ حَفْصٍ، حَدَّثَنَا خَالِدُ بْنُ الْحَارِثِ، حَدَّثَنَا شُعْبَةُ، عَنْ أَبِي التَّيَّاحِ، قَالَ سَمِعْتُ أَنَسًا، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " الْخَيْلُ مَعْقُودٌ فِي نَوَاصِيهَا الْخَيْرُ ".Narrated Anas:The Prophet (ﷺ) said, "There is always goodness in horses
From Sahih al-Bukhari, whose reports the scholars accept as authentic.