The works of Ādi Śaṅkarācārya

Sanatsujātīyam

p. 266

p. 266

नास्य पर्येषणं गच्छेत्प्रत्यर्थिषु कदाचन ।

In plain words

Never go looking for this among people who have set themselves against you — not once, not ever.

Close to the Sanskrit

Not of this should one go to the searching among adversaries at any time.