Manusmriti

siva.sh/manusmriti/7/66

दूत एव हि सन्धत्ते भिनत्त्येव च संहतान् । दूतस्तत् कुरुते कर्म भिद्यन्ते येन मानवः ॥ ६६ ॥

sanskrit

For the ambassador alone makes (kings’) allies and separates allies; the ambassador transacts that business by which (kings) are disunited or not.

english translation

dUta eva hi sandhatte bhinattyeva ca saMhatAn | dUtastat kurute karma bhidyante yena mAnavaH || 66 ||

hk transliteration by Sanscript