Arthashastra
कारु शिल्पि पाषण्ड कुशीलव वैदेहक व्यञ्जनान् आयुधीयान् व्वा पर दुर्गे प्रणिदध्यात् ॥
Painters, carpenters, heretics, actors, merchants, and other disguised spies belonging to the conqueror's army may also reside inside the fort of the enemy.
english translation
kAru zilpi pASaNDa kuzIlava vaidehaka vyaJjanAn AyudhIyAn vvA para durge praNidadhyAt ॥
hk transliteration by Sanscript