According to Indian astrology if Mars is placed in any of the houses 1, 4, 7, 8 or 12, in a Horoscope where the rising sign or the Ascendant is taken as the first house, Manglik Dosh is said to be formed in that horoscope. It is said that this Dosh becomes reason for the delay the marriage of the affected person and create disturbances even after marriage or in the worst cases it may cause the death of the spouse. In addition it is also suggested that a person having a Manglik Dosh in his or her horoscope should only marry a person who also has Manglik Dosh in his or her horoscope as the dosh gets reduced or even gets canceled if the person marrying the first person is also having Manglik Dosh in his or her horoscope.