(2) باب مَا يُنْهَى عَنْهُ مِنَ الْكَلاَمِ فِي الصَّلاَةِ
Narrated Zaid bin Arqam:
In the lifetime of the Prophet (ﷺ) we used to speak while praying, and one of us would tell his needs to his companions, till the verse, 'Guard strictly your prayers (2.238) was revealed. After that we were ordered to remain silent while praying.
Reference: Sahih al-Bukhari 1200
In-book reference: Book 21, Hadith 4
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 2, Book 22, Hadith 292