Is it permissible for a husband to marry a second woman to be a companion to his mother and alleviate her loneliness, knowing that he does not wish to divorce his first wife out of concern for their son, and what should he do if his wife requests a divorce in this situation?

It is permissible for a man to marry another woman if he is capable of being just and bearing the expenses of marriage. He is not obliged to divorce his first wife if she requests it merely because he married a second. He is permitted to refuse until she forfeits part of her dowry. However, it is advised not to marry another and instead to mend the relationship between the wife and the mother with wisdom. If the wife insists on not maintaining ties with the husband's mother, then the husband must honor his mother and treat his wife kindly as long as she fulfills his rights.