question #2 Sahih Muslim 716, Book 6, Hadith 89 : What significance does praying two rak’ahs in the mosque hold upon returning from a journey?

The Messenger of Allah (ﷺ) did not come back from the journey but by day in the forenoon, and when he arrived, he went first to the mosque, and having prayed two rak’ahs in it he sat down in it.