Sahih Bukhari Volume 1, Book 9, Hadith Number 481

Narated By 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 Quran’s were kept I said, “O Abu Muslim! I see you always seeking to pray behind this pillar.” He replied, “I saw Allah’s Apostle always seeking to pray near that pillar.”