Hayanaratna · by Balabhadra
Chapter 7 · Finding the Dashas
दशानयनाधिकाराध्यायः
अथ भावतासीरदशायाम्प्रकारान्तरेणैव विशेषस्तत्रैवोक्तः ॥व्ययसंध्यूनलग्नांशास्ते स्युर्भुक्तांशकास्तनोः ॥लग्नोनलग्नशोध्यांशास्तेतु भोग्याह्वयास्स्मृताः ॥ १ ॥
Next, a special point in the house tasira (a Tajika word for a planet's influence) dasha (planet period), by another way, stated in the same text. The lagna (rising sign) less the junction of the 12th house gives the 1st house's degrees already run. The lagna's junction less the lagna gives its degrees still to run.
Simple meaning: House periods by junctions: the lagna less the 12th junction is degrees run; the lagna junction less the lagna is degrees to run.
लग्नसंधिविहीनार्थसंध्यंशास्तेर्थभावजाः ॥
House periods by junctions: each junction less the one before gives that house's degrees.
सौरसावनतो वैषां विधायोक्तविधानतः ॥
House order: make the periods solar-civil. This is called the house order.
तत्र लग्नैष्यभागोत्थदशाद्या कीर्तिता तनोः॥
House order: the 1st house's period starts the year, from its degrees left. After the 12th house, the 1st house comes again.