Sahih al-Bukhari 550
Sahih al-Bukhari · Book 9: Times of the Prayers · The time of the Asr prayer
Narrated Anas bin Malik:
حَدَّثَنَا أَبُو الْيَمَانِ ، قَالَ أَخْبَرَنَا شُعَيْبٌ ، عَنِ الزُّهْرِيِّ ، قَالَ حَدَّثَنِي أَنَسُ بْنُ مَالِكٍ ، قَالَ كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم يُصَلِّي الْعَصْرَ وَالشَّمْسُ مُرْتَفِعَةٌ حَيَّةٌ، فَيَذْهَبُ الذَّاهِبُ إِلَى الْعَوَالِي فَيَأْتِيهِمْ وَالشَّمْسُ مُرْتَفِعَةٌ، وَبَعْضُ الْعَوَالِي مِنَ الْمَدِينَةِ عَلَى أَرْبَعَةِ أَمْيَالٍ أَوْ نَحْوِهِ.
Allah's Messenger (ﷺ) used to offer the `Asr prayer at a time when the sun was still hot and high and if a person went to Al-`Awali (a place) of Medina, he would reach there when the sun was still high. Some of Al-`Awali of Medina were about four miles or so from the town.