What did Allah's Apostle (peace be upon him) pray between when he entered the Ka`ba?
 Narrated Salim that his father said:                     "Allah's Apostle, Usama bin Zaid, Bilal, and `Uthman bin abu Talha entered the Ka`ba and then closed its door. When they opened the door I was the first person to enter (the Ka`ba). I met Bilal and asked him, "Did Allah's Apostle offer a prayer inside (the Ka`ba)?" Bilal replied in the affirmative and said, "(The Prophet offered the prayer) in between the two right pillars."