If you have seen your sister and brother-in-law in your dream: You are gradually moving towards arrangements that will help you shine, consciously or unconsciously, You can make profitable purchases, increase your income or you may receive money from an unexpected place. Seeing his sister and brother-in-law in a dream means happiness in the house, a good life with parents, always having power, being busy with good works, and getting help from his sister and brother-in-law and sharing secrets for a person who is in trouble.