Narapatijayacarya 3.1.3.95

Between the pair of sums consisting of the auspicious and inauspicious nature,
when one is deducted from the other, from the remainder the fruit born of that day is to be known.

[On the verse] 'yogāt…': From conjunction, from the sound of conjunction as the base (bāla), the states in the twelve-year cycle would be the states of child and the rest. This is the meaning: in the sound of the twelve-year cycle, whichever sound has arisen among those starting with 'a', making the sound of conjunction the starting limit, it is to be arranged in gross rule and in subtle minor rising (antarodaya) as child, youth, adult, old, and dead. Thus further on as well, the seven states are to be understood from the base according to the stated method. Namely: from the aggregate, from the sound of the aggregate, in the yearly sound; from the asterism's sound, in the solstitial half-year, in both solstices; from the sound of the zodiacal sign, in the sound of the season; from the sound of Jupiter, in the sound of the month; from the planet, from the sound of the planet, in the sound of the lunar fortnight; from the phoneme, from the sound of the phoneme, in the sound of the day; from the sound of the mora, in the sound of the ghaṭī—thus the states starting with child are to be considered. [On the verse] 'dvādaśa…': In the sound of the twelve-year cycle, having the form of a, i, u, e, o, the time period of the twelve-year cycle is situated. If it is auspicious in the five states, that is, if it does not yield prohibited results among the states of the five sounds situated in the sequence of child and the rest by the progression of minor rising, then it would be auspicious. Thus, in the five states in the minor rising,