Qurrah bin Khalid al-Sadusi قرة بن خالد السدوسي · The Book of Hajj

he came to the Kabah when the Prophet, Bilal and Usamah bin Zaid had enter it, and Uthman bin Talhah had shut the door. They stayed there for a while, then he opened the door and the Prophet came out. I (Ibn Umar) Climed the steps and entered the House and said: "Where did the Prophet pray?" They said: "Here." And I forgot to ask them how many (Rakahs) the Prophet had prayed inside the House.