A traveler who prays behind an imam who is praying four rak'ahs: is it permissible for him to separate after the first two?

Question : Well. If someone were to ask: What do you say about a traveler who prays behind an imam who is praying four rak'ahs? Do you permit him, after he has prayed the two rak'ahs, to separate and conclude the prayer? Since the traveler shortens the prayer.

Answer : We say: No, we do not permit him to do that. We do not permit him to do that.