Hadith 55
“While I was with the Prophet (ﷺ), he said, 'Umm Salim! There is no Muslim couple who have three of their children die without Allah admitting them to the Paradise by virtue of His mercy to them.' I said, 'And if there are two?' He said, 'And if there are two.'”
Umm Salim (رضي الله عنه)Al-Adab Al-Mufrad 149Adab on Children’s Death