Astrology of Murder by wife
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Jamini sutras give following combinations for Murder of husband by the wife.
Sutra 49-Mars +ketus aspect on 7th or 8th houses or they be situated in these houses.Then the wife will murder her husband
Sutra 50- If mars + ketu are in same navamsa then also the wifekills her husband.
Sutra 51-If mars and ketu are in odd signs ,then the lady kills her husband without any help.
But if they be in even sign she does it with the help of others.
Sutra 52- Exception to the Above rules.
If mars and ketu are in the debilated navamsa ( cancer) then the lady does not kill but gets seprated or seprates from husband