Arthashastra
तैश् च यथा उचितां संभाषाम् अमात्य मुखो गच्छेत् ॥
and this (false) king shall make the minister his mouth-piece in conversing with them as deserved.
english translation
taiz ca yathA ucitAM saMbhASAm amAtya mukho gacchet ॥
hk transliteration by Sanscript