It is unanimously agreed upon that children (i.e. who have pas | IlmTest

It is unanimously agreed upon that children (i.e. who have passed away) from amongst the Muslims are in al-Jannah (ie: Paradise).
وَأَطْفَالُ الْمُسْلِمِينَ فِي الْجَنَّةِ إجْمَاعًا

As for the children of al-mushrikīn (ie: the polytheists), the most correct answer is that which is established in al-Ṣaḥīḥayn (ie: al-Bukhārī and Muslim) when the Messenger ﷺ was asked (regarding them) and he replied: “Allahu aʿlam (ie: Allah knows best) what (sort of deeds) they would have done (ie: whether they would have become righteous or not).”
وَأَمَّا أَطْفَالُ الْمُشْرِكِينَ فَأَصَحُّ الْأَجْوِبَةِ فِيهِمْ مَا ثَبَتَ فِي الصَّحِيحَيْنِ: أَنَّهُ سُئِلَ عَنْهُمْ رَسُولُ اللَّهِ فَقَالَ: «اللَّهُ أَعْلَمُ بِمَا كَانُوا عَامِلِينَ»

So we cannot judge a particular one of them to be in Jannah or Nār (ie: in the Hellfire).
فَلَا نَحْكُمُ عَلَى مُعَيَّنٍ مِنْهُمْ لَا بِجَنَّةٍ وَلَا نَارٍ.

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