Is the Maghrib prayer valid with six tashahhuds?

The questioner : The Shaykh said: I mentioned it in the Maghrib prayer.

The Shaykh : Yes, it has the six tashahhuds. We gave him one and told him to bring it to us.

The questioner : Outside the hall. Yes.

The Shaykh : Outside the relatives, and in the hall we did not say it; we said it in the hall.

The questioner : Correct.

The Shaykh : We did not say it.

The questioner : Thank you. Did the one to whom you directed the question fail to answer?

The Shaykh : Yes, but we did not know this.

The questioner : I took you.

The Shaykh : Yes.

The questioner : Lord of the worlds.

The Shaykh : Yes, well, from his door, meaning, he says: It is possible that in Maghrib specifically there are six tashahhuds. If he joins the imam in the second rak'ah after the imam has risen from ruku'.
Will the tashahhud with the imam in this rak'ah count for him or not? It does not count. The imam will perform the final tashahhud. The imam will perform sujud al-sahw after the taslim. Sujud al-sahw after the taslim, according to the madhhab, how many tashahhuds is this? Three. The man now, after he performed tashahhud with the imam, stood up and sat for the first tashahhud in the first rak'ah.
This is four. He said taslim from the first tashahhud; he himself made a mistake, he forgot in the first tashahhud and said taslim. He stood up and performed the third rak'ah and performed tashahhud for it, then he performed sujud al-sahw after the taslim. How many tashahhuds is this? Six tashahhuds according to the madhhab. This does not occur in any prayer other than Maghrib, meaning, even in the four-rak'ah prayer it cannot occur.