Hayanaratna · by Balabhadra
Chapter 7 · Finding the Dashas
दशानयनाधिकाराध्यायः
यतरवत्तखुत्तवरखिन्धिकरोमकाद्याम्लेच्छास्तथा च कृतिनस्समरसिंहपूर्वाः ॥राशीनपास्य जगुरल्पलवाद्दशाद्यं तद्भादिगस्य खचरस्य बलाधिकत्वादिति ॥
Foreign teachers named Yatara, Vatta, Khutta, Varakhindhi, Romaka and others dropped the signs. So did skilled men led by Samarasimha. They taught that the first period comes from the least degrees. This is because a planet near the start of its sign is stronger.
Simple meaning: Least-degree order: the foreign teachers and Samarasimha dropped the signs. A planet near the start of its sign is stronger, so it comes first.
अथ ग्रहाणान्तासीरदशा मुक्तावल्याम् ॥
Tasira periods: only planets that look at the lagna get a period. The stronger the look, the earlier its period.
पृथक्पृथग्दृष्टिकलादिकेन वर्षादिसंख्याद्युमुखन्निहन्यात् ॥
Tasira periods, working: each planet's look times the year's days, divided by the total of the looks, gives its days.
अत्र लग्ननिरीक्षका ग्रहा हीनांशक्रमेण दशाप्रदास्स्युरिति ताजिकसारोक्तिर्न युक्तिसहा यतस्तासीरदशा दृष्टिमूलभूता दृष्टिरहितस्याल्पांशखेटस्य सबलस्यापि दशाभावात् ॥
Tasira periods: they go by the look on the lagna, not by least degrees. A planet with no look gets no period.