Ma'bad al-Juhani (may Allah have mercy on him) said: Sayyiduna Mu'awiyah (may Allah be pleased with him) delivered a sermon and said: What kind of prayer is this that you pray? I remained in the company of the Prophet (peace and blessings be upon him), and we never saw him (peace and blessings be upon him) pray this prayer, and we heard him (peace and blessings be upon him) forbid it, meaning the two rak'ahs after Asr.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 4376