Kautilya's Arthashastra 4.5.7

4.5.7

upalabdhavidyāprabhāvāṇāṃ puraścaraṇādy ādiśeyur abhijñānārtham //

Soon after the youths have actually experienced the powers of incantation, they may be taught the recitation and other accessory procedure of that art. They may afterwards be asked to test the power of their new learning in plundering such houses as contain articles or money with marks of identification, and simultaneously caught hold of in the very act. They may either be arrested while selling, purchasing, or mortgaging articles with marks of identification, or caught hold of while under intoxication brought about by medicinal drinks (yogasurámatta).