Sunan Abi Dawud 2576
سنن أبي داود#2576SahihNarrated Abdullah ibn Umar: The Prophet (ﷺ) used to make lean by training horses which he employed in the race
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Muhyi Al-Din Abdul HamidSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih Muslim (1870)
In-book reference: 15:100