Phaladeepika
क्षेत्रस्यार्द्धं हि होरा त्वयुजि रविसुधांश्वोः समे व्यस्तमेतद् द्रेष्काणेशास्त्रिभागैस्तनुसुतशुभपा द्वादशांशस्तु लग्नात् । भौमार्कीड्यज्ञशुक्राः शिशुजसमलवा ह्योजभे युग्मभे तद्- व्यस्तं त्रिंशांशनाथाः क्रियमकरतुलाः कर्कटाद्या नवांशाः ॥ ४॥
Hora means half of a Rasi; in an odd sign, the halves belong respectively to the Sun and the Moon, and in an even one, to the Moon and the Sun. The Drekkana or the third portions of a sign, are owned by the lords of the sign itself of the son's or the 5 th. house and of the 9 th or the house of Subha. The owners of the Dwadasamsas or 13 th portions of a sign are to be reckoned from that sign. In an odd sign, the Trimsamsas or degrees, i.e., th portions allotted to Mars, Saturn, Jupiter, Mercury and Venus are respectively 5, 5, 8, 7 and 5. In an even sign, it is reversed. That is, Venus, Mercury, Jupiter, Saturn and Mars have 5, 7, 8, 5 and 5 degrees respectively The first Navamsas in the several signs from Mesha onwards commence respectively with Mesha, Makara, Tula and Karkataka.
english translation
kSetrasyArddhaM hi horA tvayuji ravisudhAMzvoH same vyastametad dreSkANezAstribhAgaistanusutazubhapA dvAdazAMzastu lagnAt । bhaumArkIDyajJazukrAH zizujasamalavA hyojabhe yugmabhe tad- vyastaM triMzAMzanAthAH kriyamakaratulAH karkaTAdyA navAMzAH ॥ 4॥
hk transliteration by Sanscript