مُوَطَّأُ مَالِكٍ
Muwatta Malik 11
The Times of Prayer
وَحَدَّثَنِي عَنْ مَالِكٍ، عَنِ ابْنِ شِهَابٍ، عَنْ أَنَسِ بْنِ مَالِكٍ، أَنَّهُ قَالَ كُنَّا نُصَلِّي الْعَصْرَ ثُمَّ يَذْهَبُ الذَّاهِبُ إِلَى قُبَاءٍ فَيَأْتِيهِمْ وَالشَّمْسُ مُرْتَفِعَةٌ .
Yahya related to me from Malik from Ibn Shihab that Anas ibn Malik said, "We would pray asr and anyone who then went to Quba would arrive there while the sun was still high."
Arabic/English book reference: Book 1, Hadith 11