Is the husband considered sinful for severing the ties of kinship between his wife and her female cousin (daughter of her maternal aunt) by preventing his wife from visiting her alone or in his company, knowing that the wife meets her female cousin weekly at a family gathering?

If there is no harm in visiting her female cousin, the husband should not prevent his wife. However, his obedience is obligatory and takes precedence over the visit. She can maintain ties with her cousin without visiting. If the visit is weekly, this is sufficient to maintain ties, and the husband's prevention of the visit is not permissible, for the one who maintains ties is not the one who reciprocates, but rather the one who maintains kinship ties even when they are severed.