Sunan an-Nasa'i, Book 21, Hadith 131 (In-Book) ⓘ

The mother of the believers, 'Aishah, said: "One of the children of the Ansar (who had died) was brought to the Messenger of Allah so he prayed for him." 'Aishah said: "How fortunate he is, one of the little birds of Paradise. He never did any evil or reached the age of puberty." He said: "It is better not to say anything, O 'Aishah Allah, the Mighty and Sublime, created Paradise and created people for it, He created them in the loins of their fathers. And He created Hell and created people for it, and He created them in the loins of their fathers."

أَخْبَرَنَا مُحَمَّدُ بْنُ مَنْصُورٍ، حَدَّثَنَا سُفْيَانُ، قَالَ حَدَّثَنَا طَلْحَةُ بْنُ يَحْيَى، عَنْ عَمَّتِهِ، عَائِشَةَ بِنْتِ طَلْحَةَ عَنْ خَالَتِهَا أُمِّ الْمُؤْمِنِينَ، عَائِشَةَ قَالَتْ أُتِيَ رَسُولُ اللَّهِ صلى الله عليه وسلم بِصَبِيٍّ مِنْ صِبْيَانِ الأَنْصَارِ فَصَلَّى عَلَيْهِ ‏.‏ قَالَتْ عَائِشَةُ فَقُلْتُ طُوبَى لِهَذَا عُصْفُورٌ مِنْ عَصَافِيرِ الْجَنَّةِ لَمْ يَعْمَلْ سُوءًا وَلَمْ يُدْرِكْهُ ‏.‏ قَالَ ‏ "‏ أَوَغَيْرَ ذَلِكَ يَا عَائِشَةُ خَلَقَ اللَّهُ عَزَّ وَجَلَّ الْجَنَّةَ وَخَلَقَ لَهَا أَهْلاً وَخَلَقَهُمْ فِي أَصْلاَبِ آبَائِهِمْ وَخَلَقَ النَّارَ وَخَلَقَ لَهَا أَهْلاً وَخَلَقَهُمْ فِي أَصْلاَبِ آبَائِهِمْ ‏" ‏ ‏.‏