Language:
كتاب مواقيت الصلاة
9  
Times of the Prayers
(13)
Chapter: The time of the Asr prayer
(13)
باب وَقْتِ الْعَصْرِ
Sahih al-Bukhari 550

Narrated Anas bin Malik:

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.

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.‏
Reference : Sahih al-Bukhari 550
In-book reference : Book 9, Hadith 27
USC-MSA web (English) reference : Vol. 1, Book 10, Hadith 525
  (deprecated numbering scheme)