Arthashastra
दूष्य कुल्यानां वा विवादे प्रत्युत्पन्ने रसदाः प्रणिहिता रसं दद्युः ॥
Or whenever a quarrel arises between any two seditious parties of the same family, poisoners, previously engaged for the purpose, may administer poison to one party.
english translation
dUSya kulyAnAM vA vivAde pratyutpanne rasadAH praNihitA rasaM dadyuH ॥
hk transliteration by Sanscript