(154) باب فِي سُهْمَانِ الْخَيْلِ
Ibn 'Umar said "The Apostle of Allaah(ﷺ) allotted three portions for a man and his horse, one for him and two for his horse.
Reference: Sunan Abi Dawud 2733
In-book reference: Book 15, Hadith 257
English translation: Book 14, Hadith 2727