paid is Mangal or Kuja Dosha which if present in the horoscope of girl or the boy induce its blemishes on the married life of the couple in various ways.
लग्ने व्यये च पाताले जामित्रे चाष्टमे कुजे।
स्त्री भर्तुर्विनाशंच भर्ता च स्त्री विनाशनम्।।
The placement of Mars in lagna, 4th, 7th, 8th or 12th house in the horoscope of the girl or the boy is called the Mangal or Kuja Dosha and is considered as detrimental to the other in respect of family and conjugal happiness.
Normally, these houses should be considered from lagna but many classical texts suggest that these houses should be considered from Moon and Venus as well. If such a condition manifests in the horoscope of any individual, it is advised that he/she should get married with a partner who also has the same dosha. Different scholars have opined in different way regarding the adverse effects of Manglik Dosha. The general opinion based on the classical principles is that the marriage of a manglik with a non-manglik person will cause disastrous results and may prove fatal to the stability of marriage and quite detrimental to the spouse.
Effect of Mars in various houses
Mars is considered to be an evil planet in general and wherever it is posited or the houses which receive its aspect get blemished and destroy the signification of these houses abruptly.
If Mars is placed in lagna, it affects health and personality, its aspect on 4th house i.e. Sukhsthana destroys peace and happiness while its aspect on 7th house creates problem in marriage and married life. Its aspect on 8th house adversely affects the longevity.
Mars in the 4th house spoils the family happiness and as a consequence causes separation between the husband and wife because from here it aspects the 7th house also which is 4th from 4th and 11th house which is 12th from 12th house.
Effect of Mars on 7th house and lagna is already discussed. It will create disturbance in the marital matters related to these houses.
From 8th house Mars will have its evil effect on houses 8th, 2nd & 3rd. 8th and 3rd houses are also considered for longevity. So, impact of Mars on these two houses will have its say on longevity as well.
Mars in 12th house which inter alia is house of bed pleasures, depletes its signifcations and has its impact on the 7th house also by aspect. The 12th house being 6th from 7th house is the house of disease for the spouse and being 8th from 5th house is the house of longevity for the children. Thus Mars in 12th house creates all-round havoc for the native.
Note : Some scholars are of the opinion that Mars also causes Mangal Dosha if it is placed in 2nd house. In support of their belief they put forth the following arguments :
Mars in the 2nd house adversely affects 2nd house, 5th house, 8th house and 9th house and their signifcations. 2nd house is the Kutumb bhav. Mars in 2nd house creates rift in family. Aspect of Mars on 5th house gives problem in begetting children. It causes abortion, problem in conception etc. Its aspect on 8th is discussed earlier. Its aspect on 9th house may be troublesome for father.
Cancellation of Mangal Dosha
There are many combinations which nullifies the ill effects of Mangal Dosha. These combinations are as follows :
अजे लग्ने व्यये चापे पाताले वृश्चिके स्थिते ।
वृषे जाये घटे रन्ध्र भौम दोषो न विद्यते ।।
Manglik effect gets cancelled in case Mars is posited in any of the following vis-a-vis Aries in the first house, Sagittarius in the twelfth, Scorpio in fourth, Taurus in seventh and Aquarius in the eighth house.
चतुः सप्तमे भौमो मेषकर्कटे निग्रहः ।
कुजदोषो न विद्यते ।।
Manglik effect gets cancelled in case Mars is posited in any of the following vis-a-vis Aries or Cancer in the fourth house and Aries or Cancer in the seventh.