What is the fitrah (the innate natural disposition) upon which a newborn is born?

Question:
Our sister from al-Hasa (M. K.) asks and says: In a hadith of the Messenger (peace and blessings be upon him): Why did the Messenger (peace and blessings be upon him) not mention Islam in this hadith?

Answer:
It came in the authentic hadith: And in some versions: the religion of Islam. This and that came, and the meaning of fitrah (the innate natural disposition) is that it is upon Islam. So if a child dies young, he is upon Islam. Thus, all the children of Muslims are with their parents in Paradise, by the consensus of the people of the Sunnah and the community, that the children of Muslims are from the people of Paradise in general. And likewise, the children of disbelievers, if they die young, the correct view is that they are from the people of Paradise. Some scholars said: They are tested on the Day of Resurrection, they are examined, so whoever obeys enters Paradise, and whoever disobeys enters the Fire. But the stronger view is that they are from the people of Paradise; because of his saying (peace and blessings be upon him): And this is one whom his parents did not make a Jew, nor a Christian, nor a Magian; and because it is established from him (peace and blessings be upon him) that he saw with Ibrahim in a garden of the gardens of Paradise when he was raised to the sky, he saw with him the children of Muslims, and the children of polytheists in the garden, in the garden of Paradise.
So the point is: The correct view is that the newborn who dies before reaching puberty dies upon the fitrah (the innate natural disposition), upon the fitrah (the innate natural disposition) of Islam, and that he will not be with his family in the Fire if they are disbelievers, but rather he is with the Muslims. Yes.

The presenter : May Allah bless you. Then, the children of Muslims are even more so, O Shaykh?

The Shaykh : Even more so, yes, by the consensus of the Muslims ... the Muslims, by the consensus of the people of the Sunnah, that they are from the people of Paradise if they die before reaching puberty. As for the disagreement regarding the children of disbelievers, the children of Jews, Christians, and disbelievers, if they die young, will they be with their fathers in the Fire? There are opinions: the strongest and best of them is that they are from the people of Paradise ... And the Prophet (peace and blessings be upon him) was asked about them, and he said: But the authentic hadiths indicate that they are from the people of fitrah (the innate natural disposition), and that they are from the people of Paradise, and that they are with Ibrahim in Paradise when he saw him -may the prayers and peace of Allah be upon him- when he was raised to the sky. Yes.

The presenter : May Allah reward you with good, and may He do you good.