Verse 44

एतावदेवाविद्याया नेदं ब्रह्मेति निश्चयः ।एतदेव क्षयो यस्या ब्रह्मेदमिति निश्चयः

In plain words

This much alone is avidyā: the settled conviction 'this is not Brahman'; and this alone is its ending: the settled conviction 'this is Brahman.'