I proposed to a girl, but the elder sister of this girl is my milk sister.
Also my younger brother is the milk brother of the girl whom I want to marry. The question now is: Is it permissible for me to marry the younger girl with whom my younger brother was breastfed from her mother's milk, and her elder sister was breastfed with me from my mother's milk? Kindly give us your Fatwa in this regard.
If the case is as you have mentioned, it is permissible for you to marry the younger girl. Her sister's breastfeeding from your mother or your younger brother's breastfeeding from (Part No. 21; Page No. 128) her mother has no effect on this.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.