Hadith #3603 (Sahih al-Bukhari)
Book: Companions of the Prophet
Narrator(s): Hamran bin Aban حمران بن أبان
Grade: Sahih

Muawiya said (to the people), “You offer a prayer which we, who were the companions of the Prophet (ﷺ) never saw the Prophet (ﷺ) offering, and he forbade its offering,” i.e. the two rak`at after the compulsory `Asr prayer.

Source: https://parallelquran.com/hadith/sahih-al-bukhari-3603/