Progeny as per BPHS
Kak bandhaya yoga- In case the Lord of 5th is in 6th house and ascendant lord is conjunct mars ,the natives first born will die thereafter the wife will become sterile
If the debilitated lord of fifth is situated in 12th ,6th or 8th house and mercury/ketu is in 5th house.
The natives wife will be sterile if fifth lord is in debilitation or it does not aspect the 5th house and Saturn/mercury are in 5th house
Progeny after much efforts and treatment-If 9th lord be in lagna and the 5th lord is debilitated ,mercury and ketu in 5th house ,then one can sire a progeny through prolonged efforts.
If the fifth lord is in 6,8,12 or 5th lord is debilitated/enemy sign but in 5th then also progeny can be achieved through efforts.
Adoption or dattak putra-Fifth house has Gemini,Virgo ,Capricorn,Aquarius and Saturn+Gulik have aspect or placement in 5th house ,in these cases native goes in for adoption
If the 5th house has 6 planets and lord of 5th is 12th house and lagna lord and moon are strong.
Parjaat putra yog (Sired by others)- If 5th lord is in movable rashi and Moon+Rahu are with it and 5th house has saturn in it ,then the native has a son sired by others through his wife.
If moon is in 8th house and jupiter in 8th from moon,if the both be in conjuction from lagna and moon lagna or their is aspect of malefic on both jupiter and moon then the son thus born may be Parjaat (Sired by others) .
Cancellation- The yoga stands cancelled if kendra has a planet or benefices aspect lagna or moon or the ascendant lord is in ascendant or jupiter is in 4th house or Mars aspects jupiter.