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 rak'as after the afternoon prayer. * The dual is used here, the reference being to the two rak’as. Bukhari transmitted it.
Hadith Referenceمشكوة المصابيح / كتاب الصلاة / 1050
Hadith Gradingالألبانی:صَحِيح | زبیر علی زئی:صحيح
Hadith Takhrij´تحقيق و تخريج: محدث العصر حافظ زبير على زئي رحمه الله` «رواه البخاري (587)»