तेन प्रदेशेन राजा शुल्काध्यक्षस्य सार्थप्रमाणमुपदिशेत्सर्वज्ञख्यापनार्थम् ॥ कZ_०२.२१.२८ ॥
tena pradeśena rājā śulkādhyakṣasya sārthapramāṇam upadiśet sarvajñakhyāpanārtham
Through that same channel, the king should communicate the caravan particulars to the superintendent of customs, in order to make known that the king is fully informed.
A deterrence signal: by demonstrating superior information, the ruler reduces incentives for smuggling and for official corruption.