Arthashastra
चैत्य दैवत प्रतिमां वा तेजन तैलेन अभ्र पटलच् छन्नेन अग्निना वा रात्रौ प्रज्वाल्य तथैव ब्रूयुः ॥
or spies may set fire to an altar or an image of a god covered with a layer of mica besmeared with burning oil at night, and shout aloud as before.
english translation
caitya daivata pratimAM vA tejana tailena abhra paTalac channena agninA vA rAtrau prajvAlya tathaiva brUyuH ॥
hk transliteration by Sanscript