“There are no two Muslims (mother and father), three of whose children die before reaching the age of puberty, but Allah will admit them to Paradise by virtue of His mercy towards them.” (Using translation from Ibn Mājah 1605)
أَنَّ النَّبِيَّ ﷺ قَالَ مَا مِنْ رَجُلٍ مُسْلِمٍ يَمُوتُ لَهُ ثَلَاثَةٌ مِنْ وَلَدِهِ لَمْ يَبْلُغُوا الْحِنْثَ إِلَّا أَدْخَلَ اللهُ أَبَوَيْهِ الْجَنَّةَ بِفَضْلِ رَحْمَتِهِ إِيَّاهُمْ