Brihat Parashara Hora Shastra
अधिशत्रुगृहे चापि स्थितानां क्रमशो बलम् । भूताब्धयः खाग्निनखास्तिथ्यो दश युगाः कराः ॥ ३॥
Similarly these values occur for the other 6 divisional occupations, viz. Hora, Dreshkan, Saptāńś, Navāńś, Dvadashāńś and Trimshāńś. When all these are added together the Grah‟s Sapt Vargaj Bal emerges.
english translation
adhizatrugRhe cApi sthitAnAM kramazo balam । bhUtAbdhayaH khAgninakhAstithyo daza yugAH karAH ॥ 3॥
hk transliteration by Sanscript