Does a traveler shorten the 'Isha' prayer if he prays it behind someone who is praying Maghrib?

The questioner:
The questioner: I am a traveler, and I prayed the 'Isha' prayer with a group of travelers who were praying the Maghrib prayer. I am a traveler. He says: May Allah reward you, I am a traveler and I prayed the 'Isha' prayer with a group of travelers who were praying the Maghrib prayer, and I missed one rak'ah and caught up with them for two rak'ahs. Is that permissible, and is my prayer valid?

The Shaykh:
No, the Maghrib prayer is not shortened; it is three rak'ahs. So you are praying behind an imam who is praying a prayer that does not include shortening, which is three rak'ahs. It is not permissible for you to limit yourself to two rak'ahs; rather, you must complete your prayer. You must complete your prayer with four rak'ahs. Yes.

The presenter:
May Allah reward you

The questioner:
Your Eminence, the father. The questioner says: It was mentioned in the hadith that the surah

The Shaykh:
If you pray behind an imam who is praying the Zuhr or 'Asr prayer with four rak'ahs, and you shorten it while he does not shorten it, that is not permissible, and his prayer is not valid. It is not permissible to shorten the prayer behind one who completes the prayer. You must follow the imam and complete the prayer with him. Yes.