English Translation
Narrated Humran bin Abbas: Muawiya said (to the people), "You offer a prayer which we, who were the companions of the Prophet never saw the Prophet offering, and he forbade its offering," i.e. the two Rakat after the compulsory 'Asr prayer.
This hadith is from Sahih al-Bukhari, the most rigorously authenticated collection in Islamic scholarship. No editorial opinion is added.