Agar Budh saat se tune kuch hai lena, apni behen beti ko maa sa samman dena.
If you want to take something from Mercury in the 7th, give your sister and daughter the same respect as a mother.
Mercury (Budh) in the 7th house is a powerful placement for business and trade. But Mercury is a neutral, impressionable planet. Its results depend entirely on how you treat the living representations of Mercury in your life.
In Lal Kitab, Mercury represents sisters, daughters, and young girls (Bua, Beti, Behen).
If you want your business to flourish and your Mercury in the 7th house to give you massive wealth, you must elevate the status of the women in your family. You must treat your sister and your daughter with the same absolute reverence and respect ("maa sa samman") that you give to your own mother.
If you insult your sister or neglect your daughter, your Mercury will instantly destroy your business.