पत्तनानुवृत्तं शुल्कभागं वणिजो दद्युः यात्रावेतनं राजनौभिः सम्पतन्तः ॥ कZ_०२.२८.०४ ॥
pattanānuvṛttaṃ śulkabhāgaṃ vaṇijo dadyuḥ yātrāvetanaṃ rājanaubhiḥ sampatantaḥ
Merchants should pay the customs share applicable to the port in question; and when they travel using royal boats, they should also pay the prescribed travel fare.
Customs are standardized by port—suggesting locally calibrated tariff schedules rather than a single uniform rate.
It monetizes state-provided logistics and discourages unnecessary use of royal transport capacity.