विषण्णालिकमुभयतोरात्रं यामतूर्यम् ॥ कZ_०२.३६.३४ ॥
viṣaṇṇālikam ubhayato-rātraṃ yāma-tūryam
(应当)在两夜设“viṣaṇṇālikā”信号,并在每一更设守更信号(yāma-tūrya)。
To synchronize patrols, mark watch changes, deter crime through audible presence, and provide citizens predictable cues for curfew/safety routines.
It implies standardized SOPs for urban security—timekeeping, instrumentation, and coordinated manpower deployment.