'A'isha said that the Messenger of Allah (ﷺ) did not abandon observing two rak'ahs after 'Asr, but she reported Allah's Messenger (ﷺ) as saying:Do not get used to observe prayer at the time of the rising sun and at the time of its setting and (exhorted the Muslims) to pray at their times.
وَحَدَّثَنَا حَسَنٌ الْحُلْوَانِيُّ، حَدَّثَنَا عَبْدُ الرَّزَّاقِ، أَخْبَرَنَا مَعْمَرٌ، عَنِ ابْنِ طَاوُسٍ، عَنْ أَبِيهِ، عَنْ عَائِشَةَ، أَنَّهَا قَالَتْ لَمْ يَدَعْ رَسُولُ اللَّهِ صلى الله عليه وسلم الرَّكْعَتَيْنِ بَعْدَ الْعَصْرِ . قَالَ فَقَالَتْ عَائِشَةُ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " لاَ تَتَحَرَّوْا طُلُوعَ الشَّمْسِ وَلاَ غُرُوبَهَا فَتُصَلُّوا عِنْدَ ذَلِكَ " .
Muslim
The Book of Prayer - Travellers • Hadith 360