瑜伽論記 14.275

14.275

差別建立者：略說極微，有十五種等者，景云：此寄十五種色假想分折以辨極微，法處中色有五，唯一定自在色是實，亦假分折，餘四非實，謂極略色。

Regarding 'differentiation-based positing: briefly speaking, there are fifteen kinds of atoms, etc.': Jing says: This provisionally relies upon fifteen kinds of form, analyzing them through conceptual construction to distinguish atoms. Among the forms of the dharma-base, there are five kinds: only the form possessing mastery in concentration is real, yet it is also provisionally analyzed; the remaining four are not real, which means extremely reduced form.