Sunan Abi Dawud 692
سنن أبي داود#692SahihIbn 'Umar said:The Prophet (ﷺ) used to pray facing his camel
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 Bukhari (430) Sahih Muslim (502)
In-book reference: 2:302