From Sahih Bukhari (Hadith 1532):
Narrated Nafi`:`Abdullah bin `Umar' said, "Allah's Messenger (ﷺ) made his camel sit (i.e. he dismounted) at Al-Batha' in Dhul-Hulaifa and offered the prayer." `Abdullah bin `Umar used to do the same
Reference: Bukhari 1532