question #1 Sahih al-Bukhari 690, Book 10, Hadith 84 : What does this narration teach about the importance of following the actions of the Prophet (ﷺ) during prayer?

(and he was not a liar) When Allah’s Messenger (ﷺ) said, “Sami`a l-lahu liman hamidah” none of us bent his
back (for prostration) till the Prophet (ﷺ) prostrated and then we would prostrate after him.