This indicates that a wife is responsible for the house of her husband. Also that a man should be the guardian of his family, i.e., after his marriage he moves out of his father's house, and runs his own family affairs and is guardian of his family. In a joint family, typically the head is either the father of the husband, or mother of the husband. This also indicates that a husband should look after his parent's house, as "a man is a guardian of his father's property". So the wife should not object to her husband when he is looking after affairs of his parents.