Yazid bin Abi Ubayd (may Allah have mercy on him) said: Sayyiduna Salamah bin al-Akwa' (may Allah be pleased with him) used to make a point of praying beside the pillar near which the Mushaf was kept. I said: O Abu Muslim! Why do you make a point of praying beside this particular pillar? He said: I saw the Messenger of Allah (peace and blessings be upon him): "He (peace and blessings be upon him) used to pray beside this pillar."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 10283