The ruling on praying Maghrib behind someone who is praying 'Isha'

The questioner:
Please, my brother Abu Salih from Riyadh. Abu Salih. Peace be upon you. And upon you be peace.

The Shaykh:
Peace.

The questioner:
How are you, my brother? Go ahead.

The Shaykh:
May Allah greet you. Ask your question.

The questioner:
I slept after the 'Asr prayer today and did not wake up until the 'Isha' adhan. I missed the Maghrib prayer. Then I got up during our 'Isha' prayer and prayed Maghrib with them. Is this action correct or incorrect?

The Shaykh:
How did you pray Maghrib?

The questioner:
What did I say? I joined the 'Isha' prayer with the intention of Maghrib.

The Shaykh:
Yes, and what did you do?

The questioner:
I missed it.

The Shaykh:
It was a necessity, Shaykh.

The presenter:
All right.

The questioner:
I missed only one rak'ah. And I joined them for three rak'ahs of the night of Maghrib.

The Shaykh:
Yes, that is fine. Actions are by intentions, and you intended Maghrib and did not add anything to it; you only prayed three rak'ahs of the Maghrib prayer. There is no harm in that. Yes.