Matsya Purana — Code of Conduct and Vow-Procedure for Courtesans
वेश्यानामपि यो धर्मस् तं नो ब्रूहि तपोधन कथयिष्यत्यतस्तासां स दाल्भ्यश्चैकितायनः //
veśyānāmapi yo dharmas taṃ no brūhi tapodhana kathayiṣyatyatastāsāṃ sa dālbhyaścaikitāyanaḥ //
“O treasure of austerity, tell us what the proper dharma is even for courtesans. Therefore, Dālbhya and Caikitāyana will now explain the duties prescribed for them.”
Nothing directly—this verse is about social dharma, specifically introducing a teaching on the duties of courtesans rather than cosmology or pralaya.
Indirectly, it frames dharma as applicable to all social groups; such classifications guide householders and rulers in setting ethical norms, adjudicating disputes, and maintaining social order with role-specific duties.
None in this verse; it functions as a transition into a dharma instruction, not as a Vastu Shastra or ritual-procedure statement.