Brihat Parashara Hora Shastra
चन्द्रहोरागते कृष्णे सूर्यहोरागते सिती । लग्ने नृणां फलज्ञप्त्यै विचिन्त्या षोडशोत्तरी ॥ २४॥
The Dasha may be adopted, when the Lagn is in the Hora of Candr with birth in the Krishna Paksh, or, when Lagn is in the Hora of Sūrya with birth in the Shukla Paksh.
english translation
candrahorAgate kRSNe sUryahorAgate sitI । lagne nRNAM phalajJaptyai vicintyA SoDazottarI ॥ 24॥
hk transliteration by Sanscript