Kautilya's Arthashastra 5.4.8

5.4.8

ādiṣṭaḥ pradiṣṭāyāṃ bhūmāv anujñātaḥ praviśet, upaviśec ca pārśvataḥ saṃnikṛṣṭaviprakṛṣṭaḥ parāsanam //

With such agreements with the king, he (a courtier) may enter on the duty assigned to him. He shall sit by the side of, and close to, the king and far from the seat of another courtier. He shall avoid speaking slyly against the opinion of any member of the assembly; he shall never make incredible or false statements; nor loud laughter with no cause for jest, and loud noise and spittle. He shall also avoid talking to another in secret, mutual conversation with another in the assembly (of ministers), appearing in royal dress in the public, haughtiness, buffoonery, open request for gems and promotions, seeing with one eye, biting the lips, brow-beating, interrupting the king while speaking, enmity with a strong party, association with women, pimps, messengers of foreign kings, enemies, inimical parties, dismissed officers, and wicked people, stubborn adherence to a single purpose, and contact with any confederacy of men.