तत्रस्थाः प्रकृत्यौत्पत्तिकौ व्ययौ गूढा विद्युः आगन्तूंश्च ॥ कZ_०२.२५.१२ ॥
tatrasthāḥ prakṛtyautpattikau vyayau gūḍhā vidyuḥ āgantūṃś ca
There, stationed covert agents should learn the patrons’ natural sources of income and their expenditures, and also note incoming visitors.
Taverns reveal spending behavior; mismatches between known livelihood and expenditure help identify theft, corruption, or clandestine income streams.