The Prophet ﷺ said: When your brethren were smitten at the battle of Uhud, Allah put their spirits in the crops of green birds which go down to the rivers of Paradise, eat its fruit and nestle in lamps of gold in the shade of the Throne. Then when they experienced the sweetness of their food, drink and rest, they asked: Who will tell our brethren about us that we are alive in Paradise provided with provision, in order that they might not be disinterested in jihad and recoil in war? Allah Most High said: I shall tell them about you; so Allah sent down; "And do not consider those who have been killed in Allah's path." till the end of the verse.  

قَالَ رَسُولُ اللَّهِ ﷺ لَمَّا أُصِيبَ إِخْوَانُكُمْ بِأُحُدٍ جَعَلَ اللَّهُ أَرْوَاحَهُمْ فِي جَوْفِ طَيْرٍ خُضْرٍ تَرِدُ أَنْهَارَ الْجَنَّةِ تَأْكُلُ مِنْ ثِمَارِهَا وَتَأْوِي إِلَى قَنَادِيلَ مِنْ ذَهَبٍ مُعَلَّقَةٍ فِي ظِلِّ الْعَرْشِ فَلَمَّا وَجَدُوا طِيبَ مَأْكَلِهِمْ وَمَشْرَبِهِمْ وَمَقِيلِهِمْ قَالُوا مَنْ يُبَلِّغُ إِخْوَانَنَا عَنَّا أَنَّا أَحْيَاءٌ فِي الْجَنَّةِ نُرْزَقُ لِئَلاَّ يَزْهَدُوا فِي الْجِهَادِ وَلاَ يَنْكُلُوا عِنْدَ الْحَرْبِ فَقَالَ اللَّهُ سُبْحَانَهُ أَنَا أُبَلِّغُهُمْ عَنْكُمْ قَالَ فَأَنْزَلَ اللَّهُ { وَلاَ تَحْسَبَنَّ الَّذِينَ قُتِلُوا فِي سَبِيلِ اللَّهِ أَمْوَاتًا } إِلَى آخِرِ الآيَةِ  

She reported on the authority of her paternal uncle: I asked the Prophet ﷺ: Who are in Paradise? He replied: Prophets are in Paradise, martyrs are in Paradise, infants are in Paradise and children buried alive are in Paradise.  

حَدَّثَنَا عَوْفٌ حَدَّثَتْنَا حَسْنَاءُ بِنْتُ مُعَاوِيَةَ الصَّرِيمِيَّةُ قَالَتْ حَدَّثَنَا عَمِّي قَالَ قُلْتُ لِلنَّبِيِّ ﷺ مَنْ فِي الْجَنَّةِ قَالَ النَّبِيُّ فِي الْجَنَّةِ وَالشَّهِيدُ فِي الْجَنَّةِ وَالْمَوْلُودُ فِي الْجَنَّةِ وَالْوَئِيدُ فِي الْجَنَّةِ