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Pravacanasāra
The atom (paramāņu) having two degrees of greasiness combines with the atom with four degrees of greasiness or roughness. The atom with three degrees (of greasiness or roughness) combines with the atom with five degrees (of greasiness or roughness).
Explanatory Note: Combination takes place between similar and dissimilar types of atoms, if there is difference in degrees of either property (greasiness or roughness) of two units. There is no combination in all other instances. There is combination of an atom of two degrees of greasiness with an atom of four degrees of greasiness. The same (greasiness of two degrees), however, does not combine with one, two, three, five, six, seven, eight, numerable, innumerable and infinite degrees of greasiness. Similarly, there is combination of an atom of three degrees of roughness with five degrees of roughness; also of an atom of five degrees of roughness with seven degrees of roughness. Combination also takes place between an atom of two degrees of roughness with an atom of four degrees of greasiness. Combination takes place between atoms with difference of two degrees in greasiness, between atoms with difference of two degrees in roughness, and between atoms with difference of two degrees in greasiness and roughness. Combination does not take place between atoms of the same degree of greasiness and roughness, or between atoms with difference of one degree of greasiness and roughness. Combination does not take place between atoms with lowest, i.e., one, degree of greasiness and roughness. There is no combination of an atom of one degree of greasiness or roughness with an atom of three degrees of greasiness or roughness even though there exists a difference of two degrees of greasiness or roughness.
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