We went to receive Anas bin Malik when he returned from Sham and met him at a place called 'Ainat-
Tamr. I saw him praying riding the donkey, with his face to this direction, i.e. to the left of the
Qibla. I said to him, "I have seen you offering the prayer in a direction other than that of the Qibla."
He replied, "If I had not seen Allah's Messenger (ﷺ) doing it, I would not have done it."
Sahih al-Bukhari Book 18, Hadith 20