सहोदकमाहार्योदकं वा सेतुं बन्धयेत् ॥ कZ_०२.०१.२० ॥
sahodakamāhāryodakaṃ vā setuṃ bandhayet
He should construct a setu (dam/embankment/reservoir) either on a natural water-source or by bringing water in (via diversion/canal).
Two engineering options: exploit existing water-bodies or create supply through diversion—showing a pragmatic, site-sensitive approach to irrigation expansion.