成唯識論述記 2.807

2.807

述曰：自下第三、引證，有三也：初引有漏、無漏通經；次引唯無漏經；後有漏例同。《大莊嚴論》亦引此經，名《無盡意》，此即三乘通信之經，《毘婆沙》等前分亦有此文。既言「無始時來」有種種「界」，故知有漏、無漏種子，皆是無始法爾而有。其惡叉形，如無食子，落在地時，多為聚故，以為喻也。

The Commentary states: From here below is the third part, citing scriptural proof, which has three aspects: first, citing a sūtra common to both contaminated and uncontaminated; next, citing a sūtra exclusively on the uncontaminated; and finally, by analogy, showing contaminated seeds to be the same. The Mahāyānasūtrālaṃkāra also cites this sūtra, calling it the Akṣayamati; this is a sūtra believed in common by the three vehicles, and this passage is also found in the earlier portion of the Mahāvibhāṣā and other texts. Since it says that from beginningless time there are various 'realms' (dhātus), we know that both contaminated and uncontaminated seeds exist naturally from beginningless time. The shape of the akṣa seed is like a soapberry nut; when falling to the ground, they mostly cluster together, hence it is used as a metaphor.