question #3 Sahih Muslim 634b, Book 5, Hadith 270 : What is the role of bearing witness in confirming the teachings of the Prophet Muhammad (ﷺ)?

He who said prayer before the rising of the sun and its setting would not enter the fire (of Hell), and there was a man from Basra (sitting) beside him who said: Did you hear it from the Messenger of Allah (way peace be upon him)? He said: Yes, I bear witness to it. The man from Basra said: I bear witness that I did hear from the Messenger of Allah (ﷺ) saying it from the place that you heard from him.