瑜伽論記 23.213

23.213

第七解堅執，初明外道出家之人起惡不捨。此中不行已下，佛法之人，所不應行，設行不應堅執，以相續雜染，能動梵行故。

Seventh, explaining stubborn grasping: first, it clarifies that persons who have gone forth in non-Buddhist traditions give rise to evil and do not abandon it. From '[practices that] should not be performed herein' downward, it refers to what persons in the Buddha-Dharma should not perform; even if they perform them, they should not grasp them stubbornly, because by defiling the mental continuum, they are capable of unsettling pure conduct.