It is narrated from Sayyidah Umm Mubashshir (may Allah be pleased with her) that the Messenger of Allah (peace and blessings be upon him) said to her: "O Umm Mubashshir! Whichever woman has three of her children die in childhood and go ahead of her, Allah will admit her into Paradise by the bounty of His mercy." Umm Mubashshir (may Allah be pleased with her) was cooking food at the time, and she said: "Or two?" He (peace and blessings be upon him) said: "Or two."
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 21732