Entering the 'Isha' prayer with the imam with the intention of Maghrib

Question:
Glory be to Allah. We ask Allah for well-being, except that He does not forgive us for our needs. If you do not know that she is a believer. Ah, it was the same thing: a man passed by their way while they were praying the Fajr prayer. He opened a second type of journey in the college of revival. Do you remember and not forget?

Answer:
Since he joined them in prayer, his prayer is valid, but he must complete the 'Isha' prayer with four rak'ahs, because the 'Isha' prayer differs from the Maghrib prayer; it differs from the 'Isha' prayer, so he completes it with four rak'ahs instead of breaking it. It would have been better if he had not joined them; it would have been better if he had prayed 'Isha' alone or with a congregation of his own, because praying 'Isha' behind the Maghrib prayer is a point of difficulty among the scholars due to the difference in the characteristics of the two prayers. But since he joined them with the intention of prayer, his prayer is valid, if Allah wills, but he must complete it with four rak'ahs and not shorten it in this case.