587 - It was narrated that Mu‘awiyah said: You offer a prayer which, although we stayed close to the Messenger of Allah (blessings and peace of Allah be upon him), we did not see him offer; rather he forbade it – meaning two rak‘ahs after ‘Asr..

Commentary : The Sahabah (may Allah be pleased with them) were keen to teach those who came after them about acts of worship as they had learned them from the Messenger of Allah (blessings and peace of Allah be upon him).
In this hadith, Mu‘awiyah ibn Abi Sufyan (may Allah be pleased with him) denounces some of the people who used to pray two rak‘ahs after ‘Asr, and he explains that this is a prayer that is contrary to the teachings of the Prophet (blessings and peace of Allah be upon him). Mu‘awiyah told them that he and the Sahabah (may Allah be pleased with them) stayed close to the Prophet (blessings and peace of Allah be upon him) and offered many prayers with him, but they never saw him praying two supererogatory rak‘ahs after ‘Asr as these people did. “and he forbade it” means: he forbade offering supererogatory prayers after ‘Asr. This is a confirmation in word and deed of the Prophet’s prohibition on praying those two rak‘ahs or on offering supererogatory prayers after ‘Asr in general.
In Sahih al-Bukhari it is narrated that ‘A’ishah (may Allah be pleased with her) said with regard to praying two rak‘ahs after ‘Asr: The Prophet (blessings and peace of Allah be upon him) used to pray them, but he did not pray them in the mosque, for fear of burdening his ummah, because he liked to make things easier for them. In order to reconcile between the two reports, it was said that the Prophet (blessings and peace of Allah be upon him) prayed these two rak‘ahs to make up for the sunnah prayer of Zuhr, because he had missed it, then he continued to do that, because when he did a good deed, he would persist in doing it; however, these two rak‘ahs were not regular Sunnah (Sunnah ratibah) prayers. The difference between a regular and a non-regular Sunnah prayer is that the regular prayer is a confirmed Sunnah (Sunnah mu’akkadah) prayer that is connected to the obligatory prayers, whether it is done before or after the obligatory prayer, whereas the non-regular Sunnah prayer is a prayer that the Prophet (blessings and peace of Allah be upon him) did not enjoin or encourage people to do, but the Sahabah (may Allah be pleased with them) narrated it from him in word and deed, as in the case of two rak‘ahs after ‘Asr.
This hadith highlights the virtue of Mu‘awiyah (may Allah be pleased with him) and his keenness to follow the teachings of the Prophet (blessings and peace of Allah be upon him)..