Arthashastra
स्व भूमिष्ठानाम् अन्यतमस्य पण्य अगारैर् अभिज्ञातान् दूत मुख्यान् अभीक्ष्णं प्रेषयेत् ॥
He should repeatedly dispatch principal envoys, who are recognized by the merchant storehouses, to any one of those residing in their own territories.
english translation
sva bhUmiSThAnAm anyatamasya paNya agArair abhijJAtAn dUta mukhyAn abhIkSNaM preSayet ॥
hk transliteration by Sanscript