Permissibility of a woman breastfeeding her brother
A:
It is permissible for a woman to breast-feed her younger brother if there is a need to do so. The concerned brother will be her son by breastfeeding if
she breastfeeds him five times or more during the first two years of his life. May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.