Umm al-Mu'mineen Sayyidah Aisha (may Allah be pleased with her) narrates that the Noble Prophet (peace and blessings be upon him) was called for the funeral of an Ansari child. I said: O Messenger of Allah! There is glad tidings for this child, he is one of the birds of Paradise, he neither found sin nor acted upon it. But the Prophet (peace and blessings be upon him) said: Aisha! There is something else as well. The reality is that Allah Almighty created people for Paradise and Paradise for people at a time when these people were still in the loins of their fathers, and He created people for Hell and Hell for people at a time when these people were still in the loins of their forefathers.
Hadith Referenceالفتح الربانی / كتاب النار والجنة / 13257
Hadith Gradingمحدثین:صحیح
Hadith Takhrij«أخرجه مسلم: 2662، (انظر مسند أحمد ترقيم الرسالة: 25742 ترقیم بيت الأفكار الدولية: 26261»
Brief Explanation
Benefits: … It can indeed be said that the minor children of Muslims will enter Paradise, but it is not permissible to declare any specific child as destined for Paradise with certainty, because it is first necessary to establish what the status of his parents’ Islam is in the sight of Allah, whether it is accepted or not, or what their ultimate fate will be. And knowledge of this matter will only be in the Hereafter.
It is a separate matter that, regarding a Muslim, the good opinion is that he will die in a state of Islam and will be valued in the sight of Allah, but the rulings of the Shari‘ah are a different matter.