Hadithcore
Musnad Ahmad 3995
sahih

lt was narrated from Ibn Mas’ood that

The Messenger of Allah (ﷺ) addressed the women and said to them: "There is no woman among you for whom three of her children die but Allah, may He be glorified and exalted, will admit her to Paradise.” The most dignified of the women said: O Messenger of Allah, will the one for whom two of her children die enter Paradise? He said: “The one for whom two of her children die will enter Paradise too."

References1 variant
Arabic/English book
Book 26, Hadith 3995