Matsya Purana — Cosmography of Jambūdvīpa: Varṣas
पीतश्च दक्षिणेनासौ तेन वैश्यत्वमिष्येत भृङ्गिपत्त्रीनभश् चैव पश्चिमेन समन्वितः तेनास्य शूद्रता सिद्धा मेरोर् नामार्थकर्मतः //
pītaśca dakṣiṇenāsau tena vaiśyatvamiṣyeta bhṛṅgipattrīnabhaś caiva paścimena samanvitaḥ tenāsya śūdratā siddhā meror nāmārthakarmataḥ //
If it is yellow on the southern side, then Vaishya-hood is to be understood. And if on the western side it bears the ‘bhṛṅgī-leaf’ mark and a cloud-like hue, then its Shudra-hood is established—according to the name, meaning, and function connected with Meru.
This verse is not about Pralaya; it belongs to a technical, symbolic scheme where directions and observable marks (color/appearance) are interpreted for classification, linked here to Meru’s conceptual ‘name-meaning-function’ framework.
Indirectly, it supports dharmic governance and household practice by prescribing how to read directional signs and attributes for proper ordering and decision-making—useful to kings and householders when commissioning ritual spaces, settlements, or temples according to authoritative Vastu norms.
It encodes a Vastu-style interpretive rule: southern yellowness is read as ‘Vaiśya’ association, while western foliate/cloud-like features indicate ‘Śūdra’ association—suggesting how directional qualities and surface-marks guide ritual/architectural classification tied to Meru symbolism.