His mother breastfeeding the brother of his father-in-law
Q: I married one of my relatives two years ago. Recently, my mother told me that she had
breastfed my father-in-law's younger brother for two or three days while she was breastfeeding me,
because his mother was ill at that time. Please advise whether this breastfeeding relationship renders our marriage unlawful. May Allah reward you and guide you to all that is good. As-salamu `alaykum warahmatullah wabarakatuh (May Allah's Peace, Mercy, and Blessings be upon you!)
If the reality is as you mentioned, it is permissible for you to continue your married life with your wife. The fact that your wife's paternal uncle was breast-fed by your mother does not affect the lawfulness of your marriage.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.