Hadithcore
Hadith #2102660

Narrated Mu'awiya bin al-Hakam (RA):

Allah's Messenger (ﷺ) said: "Talking is not befitting during the Salat (prayer), for it (prayer) consists only of glorifying Allah, declaring His Greatness and the recitation of the Qur'an." [Reported by Muslim].

وَعَنْ مُعَاوِيَةَ بْنِ اَلْحَكَمِ ‏- رضى الله عنه ‏- قَالَ : قَالَ رَسُولُ اَللَّهِ ‏- صلى الله عليه وسلم ‏-{ إِنَّ هَذِهِ اَلصَّلَاةَ لَا يَصْلُحُ فِيهَا شَيْءٌ مِنْ كَلَامِ اَلنَّاسِ , إِنَّمَا هُوَ اَلتَّسْبِيحُ , وَالتَّكْبِيرُ , وَقِرَاءَةُ اَلْقُرْآنِ } رَوَاهُ مُسْلِمٌ [1]‏ .‏

References2 variants
Sunnah.com reference
Book 2, Hadith 84
Arabic/English book reference
Book 2, Hadith 218