唯識二十論述記 2.46

2.46

述曰：顯成六因，謂：中間極微，東極微處，無理容有餘五方處五極微故，如是乃至中間極微、下方極微處，非餘五處。中間極微所合六異故，中間極微應成六分。應立量云：中間極微應成多分；一處無容有餘處故；如麁聚色。或於頌中，亦成比量：中一極微應成六分與六合故；如麁聚色與六色合。然頌唯宗、因，略無同喻。

Commentary: Showing the reason for having six parts: that is, at the place of the eastern atom, the middle atom has no logical possibility of admitting the five atoms of the other five directions; likewise down to: the place of the lower atom for the middle atom is not the other five places. Because the six conjoined with the middle atom are distinct, the middle atom should have six parts. An inference should be established thus: 'The middle atom should have multiple parts (pratijñā); because the place of one cannot be the place of the others (hetu); like coarse aggregate forms (dṛṣṭānta).' Or within the verse, an inference is also formed: 'The one atom in the middle should have six parts (pratijñā); because it conjoins with six (hetu); like a coarse aggregate form conjoining with six forms (dṛṣṭānta).' However, the verse has only the thesis and the reason, omitting the similar example.