'A'isha said that the Messenger of Allah ﷺ did not abandon observing two rak'ahs after 'Asr, but she reported Messenger of Allah 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 ﷺ الرَّكْعَتَيْنِ بَعْدَ الْعَصْرِ . قَالَ فَقَالَتْ عَائِشَةُ قَالَ رَسُولُ اللَّهِ ﷺ " لاَ تَتَحَرَّوْا طُلُوعَ الشَّمْسِ وَلاَ غُرُوبَهَا فَتُصَلُّوا عِنْدَ ذَلِكَ " .