Kautilya's Arthashastra 4.4.8

4.4.8

tena pradeṣṭāro vyākhyātāḥ //

On acquiring friendship with the suspected person who may be either a judge or a commissioner, the spy may request him that the misfortune in which a friend of the spy is involved may be warded off and that a certain amount of money may be accepted. If the judge accedes to the request, he shall be proclaimed as the receiver of bribes and banished. The same rule shall also apply to commissioners.