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." (IT)
English reference (IT): Vol. 5, Book 44, Hadith 2986 (IT)
Arabic reference (IT): Book 47, Hadith 3253 (IT)