Virtues of the Prayer Hall (Sutra of the Musalla)

Bukhari :: Book 1 :: Volume 9 :: Hadith 481

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 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."