Manusmriti
उपरुध्यारिमासीत राष्ट्रं चास्योपपीडयेत् । दूषयेच्चास्य सततं यवसान्नोदकैन्धनम् ॥ १९५ ॥
When he has shut up his foe (in a town), let him sit encamped, harass his kingdom, and continually spoil his grass, food, fuel, and water.
english translation
uparudhyArimAsIta rASTraM cAsyopapIDayet । dUSayeccAsya satataM yavasAnnodakaindhanam ॥ 195 ॥
hk transliteration by Sanscript