The Prophet ﷺ said, "A Muslim whose three children die before the age of puberty will be granted Paradise by Allah due to his mercy for them." (Using translation from Bukhārī 1248)  

قَالَ رَسُولُ اللهِ ﷺ «مَا مِنْ مُسْلِمٍ يُتَوَفَّى لَهُ ثَلَاثَةٌ لَمْ يَبْلُغُوا الْحِنْثَ إِلَّا أَدْخَلَهُ اللهُ الْجَنَّةَ بِفَضْلِ رَحْمَتِهِ إِيَّاهُمْ»  

"I met Abu Dharr and said: 'Tell me a Hadith.' He said: the Messenger of Allah said: There are no two Muslims, three of whose children die before reaching puberty, but Allah will forgive them by virtue of His mercy towards them."' (Using translation from Nasāʾī 1874)  

قَالَ رَسُولُ اللهِ ﷺ «مَا مِنْ مُسْلِمَيْنِ يَمُوتُ بَيْنَهُمَا ثَلَاثَةُ أَوْلَادٍ لَمْ يَبْلُغُوا الْحِنْثَ إِلَّا غَفَرَ اللهُ لَهُمَا بِفَضْلِ رَحْمَتِهِ إِيَّاهُمْ»  

Messenger of Allah ﷺ said, "Any Muslim who has lost three of his children will not be touched by the Fire except that which will render Allah's oath fulfilled." (Using translation from Bukhārī 6656)  

أَنَّ رَسُولَ اللهِ ﷺ قَالَ «لَا يَمُوتُ لِأَحَدٍ مِنَ الْمُسْلِمِينَ ثَلَاثَةٌ مِنَ الْوَلَدِ فَتَمَسَّهُ النَّارُ إِلَّا تَحِلَّةِ الْقَسَمِ»  

"There are no two Muslims, three of whose children die before reaching puberty, but Allah will admit them to Paradise by virtue of His mercy toward them. It will be said to them: 'Enter Paradise.' They will say: 'Not until our parents enter.' So it will be said: 'Enter Paradise, you and your parents."' (Using translation from Nasāʾī 1876)  

عَنِ النَّبِيِّ ﷺ قَالَ «مَا مِنْ مُسْلِمَيْنِ يَمُوتُ بَيْنَهُمَا ثَلَاثَةُ أَوْلَادٍ لَمْ يَبْلُغُوا الْحِنْثَ إِلَّا أَدْخَلَهُمَا اللهُ بِفَضْلِ رَحْمَتِهِ إِيَّاهُمُ الْجَنَّةَ» قَالَ يُقَالُ لَهُمُ ادْخُلُوا الْجَنَّةَ فَيَقُولُونَ حَتَّى يَدْخُلَ أَبَوَانَا فَيُقَالُ لَهُمُ ادْخُلُوا الْجَنَّةَ أَنْتُمْ وَآبَاؤُكُمُ