question #1 Sahih al-Bukhari 1074, Book 17, Hadith 8 : What is the significance of following the Prophet’s actions in Islamic practice?

I saw Abu Huraira reciting Idha-Sama’ un-Shaqqat and he prostrated during its recitation. I asked Abu
Huraira, “Didn’t I see you prostrating?” Abu Huraira said, “Had I not seen the Prophet (ﷺ) prostrating, I
would not have prostrated.”