Abu Dawud
Prayer
Book Number: 002 / Hadith Number: 922
Narated By 'Aisha, Ummul Mu'minin : The Apostle of Allah (pbuh) was praying with his door bolted. I came and asked to have the door opened. He walked and opened the door for me. He then returned to his place for prayer. He (the narrator Urwah) mentioned that the door faced the qiblah.