The Maghrib prayer behind an imam who is praying the 'Isha' prayer
Machine translationRead the Arabic original
Question:
The Shaykh, if you enter the mosque and find the congregation praying the 'Isha' prayer while you are a traveler, and you join them with the intention of the Maghrib prayer, and they have already prayed one rak'ah, how should you proceed?
Answer:
Yes, you pray the Maghrib prayer in its proper form. You pray the Maghrib prayer with them, three rak'ahs. You say the taslim with them. The first tashahhud is dropped for you.
The Shaykh, if you enter the mosque and find the congregation praying the 'Isha' prayer while you are a traveler, and you join them with the intention of the Maghrib prayer, and they have already prayed one rak'ah, how should you proceed?
Answer:
Yes, you pray the Maghrib prayer in its proper form. You pray the Maghrib prayer with them, three rak'ahs. You say the taslim with them. The first tashahhud is dropped for you.
Source
قناة «العلامة الدكتور صالح الفوزان»، محاضرات في العقيدة والدعوة-008-أصول أهل السنة|صالح الفوزان|كبار العلماء — youtube.com (57:24)
The Arabic text is a machine transcription of the audio recording.