Arthashastra
एतान्य् एव वैदेहक व्यञ्जनाः, पण्य विरेयेण आहर्तारो वा ॥
Spies posing as merchants may procure these very items through the sale of commodities.
english translation
etAny eva vaidehaka vyaJjanAH, paNya vireyeNa AhartAro vA ॥
hk transliteration by Sanscript