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Gatha 605-608
The path of right faith (samyaktva-marga) is the 'region' (desa). Half of the skandha (aggregate) is called 'skandha-pradesa' (region of the skandha). One should continue the journey until the dvigrasya (two-molecule) is attained, as all are regions. The paramanu (atom) is indivisible, so it is called a participant (pratibhagi) in the dravyarthika naya (the real viewpoint).
The half of the skandha is the paryaya (mode) called skandha-desa, and the half of that is the paryaya called skandha-pradesa. Thus, due to the divisions, there are infinite paryayas in the form of skandha-pradesas up to the dvigrasya skandha. The indivisible one with one pradesa (region) is the last part of the skandha, which is the paramanu.
Sri Jayasena Acharya has explained this with an example - like making a pinda (lump) of 16 paramanus and then reducing one paramanu at a time, the skandhas will have differences up to 9 paramanus, i.e., the least skandha of 9 paramanus and the highest skandha of 16 paramanus, and the intermediate differences are to be known. They will call the lump of 8 paramanus as skandha-desa, as it is half of 16. In this also, by reducing one paramanu at a time, there will be differences of skandha-desas up to 5 paramanus, i.e., the least skandha-desa of 5 paramanus and the highest skandha-desa of 8 paramanus, and the intermediate differences.
The lump of 4 paramanus is called skandha-pradesa. In this also, by reducing one paramanu at a time, the regions (pradesas) are up to 2 paramanus skandha, i.e., the least skandha-pradesa of 2 paramanus and the highest skandha-pradesa of 4 paramanus, and the intermediate 3 paramanus skandha-pradesa. These are all the divisions of the skandha. The smallest indivisible pudgala (matter) is called paramanu.
Gatha 605: The dharma, etc., three substances are the niyama (rule) by which the gati (motion), sthiti (state), and avagaha (penetration) activities are performed. The kala (time) substance is also the cause of the performance of these activities.
Gatha 606: The jivas (souls) mutually fill up (purna) the pudgala (matter), and the dehavirya (bodily energy) is the cause of their activities.
Gatha 608: The ahara-vargana (food-aggregate) and the tithis (lunar days) become the causes of anger, and the tejovargana (luminous aggregate) becomes the cause of the rise and fall of the tejas (luminous) body. Gradually, the bhasa (speech) and marana (death) occur due to karma.