कर्शनमात्रमस्य कुर्यादव्यसनिनः परवृद्ध्या तु वृद्धः समुच्छेदनम् ॥ कZ_०७.४.१० ॥
karśanamātram asya kuryād avyasaninaḥ; paravṛddhyā tu vṛddhaḥ samucchedanam.
Against one not in calamity, he should inflict only attrition/harassment; but if the rival has grown through others’ increase (i.e., is strengthened by external gains), then—being himself strengthened—he should undertake complete uprooting (decisive elimination).
Karśana is limited pressure to weaken without overcommitment; samucchedana is a decisive campaign aimed at removing the rival’s capacity to recover.