question #3 Sahih al-Bukhari 1169, Book 19, Hadith 48 : What is the significance of performing additional rak’ahs after obligatory prayers like Maghrib and Isha?

I offered with Allah’s Messenger (ﷺ) a two rak`at prayer before the Zuhr prayer and two rak`at after the Zuhr
prayer, two rak`at after Jumua, Maghrib and `Isha’ prayers.