तेषां बाह्यं चारं छत्रभृङ्गारव्यजनपादुकासनयानवाहनोपग्राहिणस्तीक्ष्णा विद्युः ॥ कZ_०१.१२.०७ ॥
teṣāṃ bāhyaṃ cāraṃ chatrabhṛṅgāra-vyajana-pādukā-āsana-yāna-vāhana-upagrāhiṇas tīkṣṇā vidyuḥ
Their external intelligence should be conducted by sharp agents acting as suppliers/handlers of umbrellas, toiletries/adornments, fans, footwear, seats, vehicles, and mounts.
They have routine, legitimate access and can observe visitors, schedules, spending patterns, and unusual preparations without raising suspicion.
It separates outward-facing monitoring (public movements, logistics, visitors) from inner-household penetration described later as ‘ābhyantara’.