Hayanaratna · by Balabhadra
Chapter 7 · Finding the Dashas
दशानयनाधिकाराध्यायः
गम्या तुल्या तत्र दशाहद्देशस्यादिमा भवेत्॥ततः पराःपरेषां स्युर्यथावत्पुस्तकस्थिताः ॥३॥
There, the first period is the current hadda (a planet's own small part of a sign) lord's. It equals the coming part. Then come the periods of the others, in the order written in the book.
Simple meaning: Hadda periods: the current hadda lord comes first, with its part to come. The others follow in the table's order.
भुक्ततुल्या दिनप्रख्यावर्षान्तेन्याग्रहहद्दजा ॥
Hadda periods: at the year's end, the first lord returns with its passed part. The count runs through the sign to 30 degrees.
यातैष्यमासांतरवासराद्यं हन्यात्स्वरामावधिभोग्यभागैः ॥
Hadda periods in the month: the month's span times the hadda degrees, divided by 30, gives each planet's share.
अत्रोदाहरणम्॥तत्र वर्षप्रवेशे स्पष्टलग्नं राश्यादि ४।८।५३।१०॥ अत्र संज्ञातंत्रोक्तं ॥ मेषेंगतर्काष्टशरेषु भागा इत्यादिना हद्दांशाद्द्वादशगुणा भौमादिपंचग्रहाणां वर्तमानहद्देश्वरमारभ्य सौरदशादिनानि वर्षे भवंति॥
Hadda example: the lagna is Leo 8;53. Hadda degrees times 12 give each of the five planets' days, starting from the current hadda lord.