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.
Bukhari
Hajj (Pilgrimage) • Hadith 134