Mars(Mangal) in sevenh House
This house belongs to the influences of Venus and Mercury, who combined together provide the effect of Sun. If Mars is placed therein, the 7th house will be affected by Sun and Mars both, which ensures that the native.s ambition will be fulfilled. Wealth, property and family will increase. But if Mercury is also placed here alongwith Mars, very adverse results will follow regarding the things and relations represented by Mercury e.g., sister, sister-in-law, nurses, maid servant, parrot, goats etc. Hence it would be better to keep away from them.