Sayyiduna Abu Hurayrah (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) said: "There is no Muslim who has three children die who had not yet reached puberty, but Allah Almighty will admit that person into Paradise, and them as well, by His grace and mercy. They will be at one of the gates of Paradise, and it will be said to them: Enter Paradise. They will say: Not until our parents come. Then it will be said to them: Enter, you and your parents as well, by the grace and mercy of Allah."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الجنائز / 7144