Arthashastra
आगतांश् च एषां दुर्गे गूढ पुरुषान् अर्थ मानाभ्याम् अभिसत्कृत्य प्रकृतिच् छिद्राणि प्रदर्शयेयुः ॥
And when their secret agents arrive at the stronghold, they should be welcomed with honors and material gifts, and then be shown the inherent vulnerabilities of the state.
english translation
AgatAMz ca eSAM durge gUDha puruSAn artha mAnAbhyAm abhisatkRtya prakRtic chidrANi pradarzayeyuH ॥
hk transliteration by Sanscript