Kautilya's Arthashastra 9.3.9

9.3.9

abhyantarakopaśaṅkāyāṃ śaṅkitān ādāya yāyāt, bāhyakopaśaṅkāyāṃ vā putradāram eṣām //

Or the king himself may go in person to receive the profit in the front, if he is able to ward off the annoyance in the rear. If he is apprehensive of internal troubles, he may take with him the suspected leaders. If he is apprehensive of external troubles, he should march after keeping inside his capital as hostages the sons and wives of suspected enemies and after having split into a number of divisions the troops of the officer in charge of waste lands (súnyapála) and having placed those divisions under the command of several chiefs, or he may abandon his march, for it has been already stated that internal troubles are more serious than external troubles.