question #1 Sahih al-Bukhari 930, Book 11, Hadith 54 : What is the significance of performing two rak’ahs upon entering the mosque during the Friday Khutba?

A person entered the mosque while the Prophet (ﷺ) was delivering the Khutba on a Friday. The Prophet (ﷺ)
said to him, “Have you prayed?” The man replied in the negative. The Prophet (ﷺ) said, “Get up and pray
two rak`at.”