Were there debates in the past between the people of the Sunnah and the other sects, such that a ruling was issued on them regarding disbelief or remaining within Islam, like

The questioner : The topic of the Islamic sects that emerged in the past centuries is seventy-three sects, for example, some of which are disbelievers and some are not. From the conditions you mentioned, Shaykh, did debates occur between a scholar of the Book and the Sunnah and this innovator, or the one who reached the level of disbelief? Is it possible in history, for example, between the Twelver Shi'ah and the Sunnis, that the Sunni would discuss with him or establish the proof against him in the manner you mentioned, for example, until a ruling is issued on him regarding disbelief or remaining within Islam?

The Shaykh : Of course, those who debated them were scholars, but the point I am circling around is also relevant here, because what does the hadith of the sects mean by "in the Fire"? Does it mean they are eternally in it?

The questioner : No, it is not a condition.

The Shaykh : Then.

The questioner : Some of them will be eternally in the Fire.

The Shaykh : Yes, and I am saying that among these people, some will be eternally in the Fire, but which ones?

The questioner : Allah knows best.

The Shaykh : We have researched the specification, so your question now is actually equivalent to the previous research: La ilaha illa Allah (There is no deity but Allah).