The works of Ādi Śaṅkarācārya

Sanatsujātīyam

p. 218

p. 218

ज्ञानेन विद्वान्प्रतिहन्ति सिद्धम् ।

In plain words

With knowledge, the one who knows strikes down what is already done.

Close to the Sanskrit

By knowledge the knower strikes down what has been accomplished.