Brihat Parashara Hora Shastra
सप्तमेशे स्वनीचस्थे पापर्क्षे पापसंयुते । सप्तमे क्लीवराश्यंशे द्विभार्यो जातको भवेत् ॥ १९॥
PLURALlIY OF WIVES. One will have two wives, if Yuvati Lord is in fall, or in a malefic Rāśi along with a malefic, while Yuvati Bhava, or the 7th Navamsa belong to a eunuch planet.
english translation
saptameze svanIcasthe pAparkSe pApasaMyute । saptame klIvarAzyaMze dvibhAryo jAtako bhavet ॥ 19॥
hk transliteration by Sanscript