There is no hadeeth which says that a wife’s permission is required before taking another wife

Her co-wife threatens her, is hostile towards her and does not greet her with salaam

He is married to two wives and he does not work; should he divorce one of them?

Is it permissible to suspend division among co-wives on the day of Eid?

Ruling on women hating polygyny (plural marriage)

Difference in spending on two wives, and spending on children of one wife from a previous marriage

Is it permissible for him to go to his second wife if he forsakes his first wife for a shar’i reason?

His wife cannot conceive now and he wants more children

Giving a gift to the wife who gives birth and not to the other wife

Ruling on teaching the second wife’s children on the first wife’s day