It is recommended to pray two rak`ah in the masjid for one who has come from a journey, when he first arrives Sahih Muslim 716
Translation
Ka'b b. Malik reported
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.