question #2 Sahih al-Bukhari 95, Book 3, Hadith 37 : How does the practice of seeking permission reflect in the etiquette of entering someone’s space?

Whenever the Prophet (ﷺ) spoke a sentence (said a thing), he used to repeat it thrice so that the people
could understand it properly from him and whenever he asked permission to enter, (he knocked the
door) thrice with greeting.