Mu'awiya said, “You observe a prayer which we who were the companions of God's Messenger never saw him pray; indeed, he forbade them;”* meaning the two <i>rak'as</i> after the afternoon prayer. * The dual is used here, the reference being to the two <i>rak’as</i>. Bukhari transmitted it.

وَعَن مُعَاوِيَة قَالَ: إِنَّكُمْ لَتُصَلُّونَ صَلَاةً لَقَدْ صَحِبْنَا رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَمَا رَأَيْنَاهُ يُصَلِّيهِمَا وَلَقَدْ نَهَى عَنْهُمَا يَعْنِي الرَّكْعَتَيْنِ بَعْدَ الْعَصْر. رَوَاهُ البُخَارِيّ