Sankaracarya's Vivekachudamani 493

नाहमिदं नाहमदोऽप्युभयोरवभासकं परं शुद्धम् ।

बाह्याभ्यन्तरशून्यं पूर्णं ब्रह्माद्वितीयमेवाहम् ॥

nāhamidaṃ nāhamado'pyubhayoravabhāsakaṃ paraṃ śuddham |

bāhyābhyantaraśūnyaṃ pūrṇaṃ brahmādvitīyamevāham ||

(Sankaracarya's Vivekachudamani 493)

I am neither this nor that but the supreme Illuminator of both, pure, devoid of anything inner or outer. I am infinite; verily, I am the non-dual Brahman.