Hayanaratna · by Balabhadra
Chapter 7 · Finding the Dashas
दशानयनाधिकाराध्यायः
अथ मासप्रवेशे भावान्तरांशाद्वादशभक्ता मासप्रवेशे ग्रहाणांभावतसीरदशादिनानि स्युः ॥ दिनप्रवेशेपि भावांतरांशाः षड्भक्ता दिनप्रवेशे ग्रहाणां भावतसीरदशाघटयः स्युरिति विशेषः ॥
Next, at the month entry, divide the degrees between the houses by twelve. This gives the days of the house tasira (a Tajika word for a planet's influence) periods at the month entry. At the day entry too, divide the degrees between the houses by six. This gives the ghatikas (24-minute units) of the house tasira periods at the day entry. This is the special point.
Simple meaning: House periods in the month and day: degrees between houses divided by 12 give month days; divided by 6, day ghatikas.
अथ स्थूलभावतसीरदशा ताजिकसारे॥
Rough house periods: the house's sign number times five, less a small part, gives its days.
उदाहरणम् ॥ लग्नं ३।४।३।८ अत्रोर्ध्वांकमितिः ३ शरघ्नी १५ स्वत्रयोदशांशेन दिनादिना १।९।१४। हीना १३।५०।४६। जाता लग्नदशा दिनादिका ॥ एवं समस्तभावानान्दशा ज्ञेया॥
Rough house periods, example: 3 times 5 is 15. Less its 13th part, it gives 13;50;46 days for the lagna.
एते दशाहा अंशादित्यागात्स्थूलाः अत्र शून्यमिते भावोर्ध्वांके द्वादशराशयः पञ्चगुणाः कर्तव्या इति शेषः ॥ अत्र सर्वत्र भावानान्दशादियोगः षष्ट्यधिकं शतत्रयं भवति ॥
Rough house periods: they leave out the degrees. A zero sign counts as 12. All twelve add up to 360 days.