Bukhari 502

Narrated Yazid bin Al `Ubaid:I used to accompany Salama bin Al-Akwa` and he used to pray behind the pillar which was near the place where the Qur'ans were kept. I said, "O Abu Muslim! I see you always seeking to pray behind this pillar." He replied, "I saw Allah's Messenger (ﷺ) always seeking to pray near that pillar