(4) Prayer
كتاب الصلاة
(23c) Chapter: Times when Prayer is Prohibited - Section 3
(22) باب أوقات النهي - الفصل الثالث
Mishkat al-Masabih 1050 
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.
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
 صَحِيح  (الألباني)حكم :
Reference : Mishkat al-Masabih 1050
In-book reference : Book 4, Hadith 468