Is it incumbent upon the son of a divorced wife's maternal aunt to sever his relationship with the divorced husband, especially regarding welcoming him into the home, after the relationship between the divorced wife's brother and this friend became strained due to the latter hosting his sister's ex-husband?

The Sharia has urged Muslims to foster harmony and affection, especially among family members, due to the ties of kinship. Severing ties of kinship without a legitimate Shari reason has severe consequences. For a man to swear an oath not to enter his cousin's house unless his cousin cuts ties with his sister's ex-husband is reprehensible, as it involves severing kinship ties, and this oath must not be fulfilled. This swearer is advised to fear Allah and expiate his oath, based on the saying of the Prophet, peace and blessings be upon him: "By Allah, if Allah wills, I do not swear an oath and then see something else as better than it, but I expiate my oath and do that which is better." Family members cannot bear the responsibility of cutting ties before Allah.