Kautilya's Arthashastra 2.36.35

2.36.35

tūryaśabde rājño gṛhābhyāśe sapādapaṇaṃakṣaṇatāḍanaṃ prathamapaścimayāmikam, madhyamayāmikaṃ dviguṇam, antaścaturguṇam //

The trumpet having been sounded, whoever moves in the vicinity of royal buildings during the first or the last yáma (3 hours?) of the period shall be punished with a fine of one pana and a quarter; and during the middlemost yámas, with double the above fine; and whoever moves outside (the royal buildings or the fort) shall be punished with four times the above fine.