What is the ruling on the Ibrahimic prayer in the final tashahhud?

The questioner : ... like the Ibrahimic prayer in the final tashahhud, the triple prayer, and the quadruple prayer.

The Shaykh : The final one or the middle one?

The questioner : No, Shaykh, the final one.

The Shaykh : The final tashahhud.

The questioner : Yes, O Shaykh.

The Shaykh : The final tashahhud.

The questioner : Yes.

The Shaykh: All right.

The questioner : So what is the stronger position in this issue, Shaykh?

The Shaykh : It is obligatory.

The questioner : It is obligatory.

The Shaykh: Yes.

The questioner : Shaykh, if you would be so kind, may Allah reward you with good, Shaykh ... .

The Shaykh : As for my reading of the description of the prayer.

The questioner : I read it, Shaykh, and you mentioned this in it.

The Shaykh : So what do you want from me now?

The questioner : Shaykh, how do we respond to the doubts raised by some of the opponents, Shaykh?

The Shaykh : May Allah bless you. You are asking for evidence, but you have not mentioned their doubt so that I can refute it.

The questioner : Shaykh, the evidence for that is that the Prophet (peace and blessings be upon him) had the same description in the tashahhud, which was the same for the middle tashahhud and the final tashahhud.

The Shaykh : Yes, but you have strayed from what you were focusing on.

The questioner : Yes, O Shaykh.

The Shaykh : So please be organized with me in the discussion, as time is short.

The questioner : Yes, O Shaykh.

The Shaykh : You say that there are doubts, so what are these doubts? As for the evidence for its obligation, it is mentioned in the description of the prayer.

The questioner : Yes, may Allah reward you with good.

The Shaykh : So what are the doubts?

The questioner : Shaykh, I apologize most sincerely, Shaykh. The doubt I read was ... .

The Shaykh : Ah, please, go ahead, go ahead.

The questioner : I apologize, Shaykh, for the second time. Shaykh, the second piece of evidence is the hadith ... .