Sayyidah Habibah bint Abi Sufyan (may Allah be pleased with her) said: I was sitting in the house of Sayyidah Aishah (may Allah be pleased with her) when the Prophet (peace and blessings be upon him) came in and said: "Any Muslim husband and wife who lose three children who have not yet reached puberty, Allah will admit the two of them to Paradise by the grace of His mercy towards those children."
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 20940