Sahih al-Bukhari 551
Sahih al-Bukhari · Book 9: Times of the Prayers · The time of the Asr prayer
Narrated Anas bin Malik:
حَدَّثَنَا عَبْدُ اللَّهِ بْنُ يُوسُفَ ، قَالَ أَخْبَرَنَا مَالِكٌ ، عَنِ ابْنِ شِهَابٍ ، عَنْ أَنَسِ بْنِ مَالِكٍ ، قَالَ كُنَّا نُصَلِّي الْعَصْرَ ثُمَّ يَذْهَبُ الذَّاهِبُ مِنَّا إِلَى قُبَاءٍ، فَيَأْتِيهِمْ وَالشَّمْسُ مُرْتَفِعَةٌ.
We used to pray the `Asr and after that if one of US went to Quba' he would arrive there while the sun was still high.