Sunan At-Tirmidhi

Hadith #2986

Narrated Zaid bin Arqam:""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