Sahih al-Bukhari 1653
Narrated `Abdul `Aziz bin Rufai:
I asked Anas bin Malik, "Tell me what you remember from Allah's Messenger (ﷺ) (regarding these 
questions): Where did he offer the Zuhr and `Asr prayers on the day of Tarwiya (8th day of Dhul- 
Hijja)?" He relied, "(He offered these prayers) at Mina." I asked, "Where did he offer the `Asr prayer 
on the day of Nafr (i.e. departure from Mina on the 12th or 13th of Dhul-Hijja)?" He replied, "At Al- 
Abtah," and then added, "You should do as your chiefs do."
حَدَّثَنِي عَبْدُ اللَّهِ بْنُ مُحَمَّدٍ، حَدَّثَنَا إِسْحَاقُ الأَزْرَقُ، حَدَّثَنَا سُفْيَانُ، عَنْ عَبْدِ الْعَزِيزِ بْنِ رُفَيْعٍ، قَالَ سَأَلْتُ أَنَسَ بْنَ مَالِكٍ ـ رضى الله عنه ـ قُلْتُ أَخْبِرْنِي بِشَىْءٍ، عَقَلْتَهُ عَنِ النَّبِيِّ صلى الله عليه وسلم أَيْنَ صَلَّى الظُّهْرَ وَالْعَصْرَ يَوْمَ التَّرْوِيَةِ قَالَ بِمِنًى‏.‏ قُلْتُ فَأَيْنَ صَلَّى الْعَصْرَ يَوْمَ النَّفْرِ قَالَ بِالأَبْطَحِ‏.‏ ثُمَّ قَالَ افْعَلْ كَمَا يَفْعَلُ أُمَرَاؤُكَ‏.‏