Arthashastra
द्वेष्यता शत्रु वेदनं दुःख आसङ्गश् च कोपः ॥
anger brings about enmity with, and troubles from, an enemy, and is always associated with pain.
english translation
dveSyatA zatru vedanaM duHkha AsaGgaz ca kopaH ॥
hk transliteration by Sanscript