Mandukya Karika, verse 4.97

Text

अणुमात्रेऽपि वैधर्म्ये जायमानेऽविपश्चितः |
असंगता सदा नास्ति किमुताऽऽवरणच्युतिः ॥ ९७ ॥

aṇumātre'pi vaidharmye jāyamāne'vipaścitaḥ |
asaṃgatā sadā nāsti kimutā''varaṇacyutiḥ || 97 ||

97. The slightest idea of variety (in Ātman) entertained by the ignorant bars their approach to the unconditioned. The destruction of the veil (covering the real nature of Ātman) is out of the question.

Shankara Bhashya (commentary)

If persons, through ignorance, think,—as those who differ from us assert—that an entity (i.e., Jīva or Ātman) does undergo the slightest change, either subjectively or objectively, then such ignorant persons can never realise the ever-unrelatedness (of Ātman).1 Therefore2 it goes without saying that there cannot be any destruction of bondage (that is supposed to keep the Jīva bound to the world).