Hayanaratna · by Balabhadra
Chapter 8 · Month Chart and Monthly Results
मासप्रवेशादिविचाराध्यायः
अथ मासलग्नमुंथहालग्नपोर्मध्ये यो बलवांस्तस्माद् हद्दादशा विचार्य्या इत्युक्तं वर्षतंत्रे ॥इंथिहालग्नपो राशिपो बली तत्र हद्दपाः ॥दशेशाः स्वांशतुल्याहेरित्युक्तं कैश्चिदागमात् ॥
Of the muntha (the point that moves one sign each year) and the lagna (rising sign), take the sign lord that is strong. There, the hadda (a planet's own small part of a sign) lords are the dasha (planet period) lords. They run for days equal to their own degrees. So some have said, from the traditional texts.
Simple meaning: Hadda periods in the month: take the stronger sign lord of the muntha and the month lagna. In that sign the hadda lords rule in turn, one day per degree.
अत्र विशेषमाह वामनः ॥
Hadda periods, Vamana: in its own or a friend's hadda the day and month periods are likewise. A planet looking at the hadda gives the best result.
अत्र स्वहद्दादिज्ञानमासलग्नवशतो ज्ञेयम् ॥
Own hadda: it is found from the month lagna.
अत्रांतर्दशाज्ञानमाह यादवः ॥
Sub-periods in the month: Sun, Moon, Mars, Rahu, Jupiter, Saturn, Mercury, Ketu and Venus, one day each, starting from the period's own lord…