that the Messenger of Allah (ﷺ) said: "Salat Al-Wusta is Salat Al-'Asr."
Jami` at-Tirmidhi Book 47, Hadith 37
← Previous Hadith 'Ubaidah As-Salmani that 'Ali narrated to him that on the Day of Al-Ahzab the Prophet (ﷺ) said: "O Allah! Fill their graves and their homes with fire as they have kept us busy from Salat Al-Wusta (the middle prayer) until the sun set."

Jami` at-Tirmidhi Book 47, Hadith 36 Next Hadith → "During the time of the Messenger of Allah (ﷺ), we would talk during Salat, so 'And stand before Allah with obedience (2:238) was revealed, ordering us to be silent."

(Another chain) with similar wordings, but he added: "And we were forbidden from talking."

Jami` at-Tirmidhi Book 47, Hadith 38