Sahih Bukhari

Narrated Abu Sa`id Al-Khudri:Some women requested the Prophet (ﷺ) to fix a day for them as the men were taking all his time. On that he promised them one day for religious lessons and commandments. Once during such a lesson the Prophet said, ""A woman whose three children die will be shielded by them from the Hell fire."" On that a woman asked, ""If only two die?"" He replied, ""Even two (will shield her from the Hell-fire)