How Does A Traveler Establish His Prayer Behind A Resident Imam?

How does a traveler establish his prayer behind a resident imam?

If a traveler follows a resident imam, he establishes his prayer in full (Mawsili, al-Ikhtiyar, I, 269). Because the Prophet Muhammad (saw) said, “Imam is meant to be followed.” (Bukhari, Salat, 18) and expressed that the prayer of congregation should be the same with that of the imam. If a traveler gives salam before completing his prayer with imam while following a resident imam, the prayer will not be valid. In this situation, the person whose prayer is invalid establishes the same prayer alone again but in two rakats rather than four rakats.

Source: Presidency Of Religious Affairs The Turkey, High Board of Religious Affairs FATWA