The works of Ādi Śaṅkarācārya

Ātmabodhaḥ

Verse 61

अनण्वस्थूलमह्रस्वमदीर्घमजमव्ययम् ।अरूपगुणवर्णाख्यं तद्ब्रह्मेत्यवधारयेत् ॥ ६० ॥

In plain words

Not atomic, not massive. Not short, not long. Never born, never wearing away. No form, no quality, no colour, no name. Fix this firmly: that is Brahman.

Close to the Sanskrit

Not atomic, not gross, not short, not long, unborn, undecaying; without form, quality, colour, or name — that one should ascertain as Brahman.