حَدَّثَنَا حُسَيْنُ بْنُ عَلِيٍّ عَنْ زَائِدَةَ عَنْ سِمَاكِ بْنِ حَرْبٍ عَنْ عِكْرِمَةَ عَنِ ابْنِ عَبَّاسٍ قَالَ صَلَّى رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ وَأَصْحَابُهُ إِلَى بَيْتِ الْمَقْدِسِ سِتَّةَ عَشَرَ شَهْرًا ثُمَّ صُرِفَتْ الْقِبْلَةُ بَعْدُ
مسند امام احمد بن حنبل · Hadith 2252
It was narrated that Ibn "Abbas (RA) said: The Messenger of Allah (PBUH) and his Companions prayed facing towards Jerusalem for sixteen months, then the qiblah was changed after that.
Translated by Dr. Muhammad Muhsin Khan · Reviewed by Islamic University of Madinah · Published March 2020