Seventh house in a horoscope is called kalathra sthana or house. In simple terms Kalathra stands for spouse. The Kalathra karaka or significator in a male horoscope is Venus, while in the female horoscope it is Jupiter. The seventh house in the horoscope stands for spouse, bed pleasures, marital happiness, marital harmony, and partnership with spouse, Kalathra dosha means affliction to the house of marriage and problems in the marital life.