The Qibla
Malik :: Book 14 : Hadith 14.3.7
Yahya related to me from Malik from Yahya ibn Said that Said ibn al-Musayyab said, "The Messenger of Allah, may Allah bless him and grant him peace, prayed towards the Baytal-Maqdis for sixteen months after arriving in Madina. Then the qibla was moved, two months before the battle of Badr. "