We used to speak during the prayer in the time of the Messenger of Allah ﷺ, then the verse was revealed, "And stand before Allah devoutly obedient" [Baqarah 2:238], so we were commanded to remain silent.Ahmad bin Mani narrated to us, Hushaym narrated to us, Ismail bin Abu Khalid narrated to us something similar, and Wazad added in it, "And we were forbidden from speaking."
حدثنا أحمد بن منيع حدثنا مروان بن معاوية ويزيد بن هارون ومحمد بن عبيد عن إسمعيل بن أبي خالد عن الحارث بن شبيل عن أبي عمرو الشيباني
كنا نتكلم على عهد رسول الله ﷺ في الصلاة فنزلت {وقوموا لله قانتين} فأمرنا بالسكوت حدثنا أحمد بن منيع حدثنا هشيم حدثنا إسمعيل بن أبي خالد نحوه وزاد فيه ونهينا عن الكلام
Its chain of transmission is daif. Nasai also reported it in al-Kubra, hadith 11051, from Hannad through the same chain, and Ibn Hibban graded it sahih, hadith 40. Ata bin Saaib became confused in his memory late in life, and the narrator who reported from him heard from him after that confusion set in.