उपरुद्धपरिक्षिप्तयोरुपरुद्धमन्यतो निष्क्रम्योपरोद्धारं प्रतियुध्येत न परिक्षिप्तं सर्वतः प्रतिरुद्धम् ॥ कZ_०८.५.१३ ॥
uparuddhaparikṣiptayor uparuddham anyato niṣkramyoparoddhāraṃ pratiyudhyeta na parikṣiptaṃ sarvataḥ pratiruddham
Between one who is blockaded and one who is completely encircled, one should counter-fight the blockader by sallying out from another side; one should not attempt this against a force that is completely encircled and blocked on all sides.
Counteraction is advised only when there is an unblocked axis for maneuver; total encirclement removes that option.