Sahih al-Bukhari 587
Sahih al-Bukhari · Book 9: Times of the Prayers · One should not try to offer As-Salat (the prayers) just before sunset
Narrated Muawiya:
حَدَّثَنَا مُحَمَّدُ بْنُ أَبَانَ ، قَالَ حَدَّثَنَا غُنْدَرٌ ، قَالَ حَدَّثَنَا شُعْبَةُ ، عَنْ أَبِي التَّيَّاحِ ، قَالَ سَمِعْتُ حُمْرَانَ بْنَ أَبَانَ ، يُحَدِّثُ عَنْ مُعَاوِيَةَ ، قَالَ إِنَّكُمْ لَتُصَلُّونَ صَلاَةً، لَقَدْ صَحِبْنَا رَسُولَ اللَّهِ صلى الله عليه وسلم فَمَا رَأَيْنَاهُ يُصَلِّيهَا، وَلَقَدْ نَهَى عَنْهُمَا، يَعْنِي الرَّكْعَتَيْنِ بَعْدَ الْعَصْرِ.
You offer a prayer which I did not see being offered by Allah's Messenger (ﷺ) when we were in his company and he certainly had forbidden it (i.e. two rak`at after the `Asr prayer).