مُوَطَّأُ مَالِكٍ
Muwatta Malik 464
The Qibla
وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ يَحْيَى بْنِ سَعِيدٍ، عَنْ سَعِيدِ بْنِ الْمُسَيَّبِ، أَنَّهُ قَالَ صَلَّى رَسُولُ اللَّهِ صلى الله عليه وسلم بَعْدَ أَنْ قَدِمَ الْمَدِينَةَ سِتَّةَ عَشَرَ شَهْرًا نَحْوَ بَيْتِ الْمَقْدِسِ ثُمَّ حُوِّلَتِ الْقِبْلَةُ قَبْلَ بَدْرٍ بِشَهْرَيْنِ .
Yahya related to me from Malik from Yahya ibn Said that Said ibn al-Musayyab said, "The Messenger of Allah, (ﷺ), prayed towards the Baytal-Maqdis for sixteen months after arriving in Madina. Then the qibla was moved, two months before the battle of Badr. "
Arabic/English book reference: Book 14, Hadith 7