Hadith 404
حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، حَدَّثَنَا اللَّيْثُ، عَنِ ابْنِ شِهَابٍ، عَنْ أَنَسِ بْنِ مَالِكٍ، أَنَّهُ أَخْبَرَهُ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم كَانَ يُصَلِّي الْعَصْرَ وَالشَّمْسُ بَيْضَاءُ مُرْتَفِعَةٌ حَيَّةٌ وَيَذْهَبُ الذَّاهِبُ إِلَى الْعَوَالِي وَالشَّمْسُ مُرْتَفِعَةٌ .
Anas b. Malik said the Messenger of Allah (ﷺ) used to say the 'Asr prayer when the sun was high and bright and living, then one would go off to al-'Awali and get there while the sun was still high.
Reference : Sunan Abi Dawud 404
In-book reference : Book 2, Hadith 14