Brihat Jataka
कुजेन्दुहेतु प्रतिमासमार्तवं गते तु पीडर्क्षमनुष्णदीधितौ ॥ अतोऽन्यथास्थे शुभपुंग्रहेक्षिते नरेण सँय्योगमुपैति कामिनी ॥ ४-१ ॥
Mars and Moon are the cause for the bringing about monthly course in women. When in the case of a woman her Moon occupies a house that is other than the 3rd, 6th, lOth or llth from her natal Moon and is aspected by Mars in transit at the menses time she is capable of conceiving. ln such a case if the man has his Moon in his upachaya houses ie 3rd, 6th, lOth or llth from his natal Moon and is aspected by Jupiter their union brings about pregnancy. This of course does not apply to a sterile, impotent, aged or too young a person.
english translation
kujenduhetu pratimAsamArtavaM gate tu pIDarkSamanuSNadIdhitau ॥ ato'nyathAsthe zubhapuMgrahekSite nareNa sa~yyogamupaiti kAminI ॥ 4-1 ॥
hk transliteration by Sanscript