Matsya Purana — Measures of Time: Caturyuga Computation
महाधनुर्धराश्चैव त्रेतायां चक्रवर्तिनः सर्वलक्षणपूर्णास्ते न्यग्रोधपरिमण्डलाः //
mahādhanurdharāścaiva tretāyāṃ cakravartinaḥ sarvalakṣaṇapūrṇāste nyagrodhaparimaṇḍalāḥ //
In the Tretā-yuga, they were mighty bearers of great bows and cakravartins (universal monarchs); endowed with all auspicious marks, they were broad and well-proportioned—like the wide-spreading circle of the nyagrodha (banyan).
This verse does not discuss Pralaya; it describes the qualities and stature of ideal rulers in the Tretā-yuga.
By portraying Tretā-yuga rulers as cakravartins (universal monarchs) with strength and auspicious qualities, it reinforces the Purāṇic ideal of kingship: power disciplined by dharma, protection, and exemplary conduct.
No direct Vāstu or ritual rule is stated; however, the term 'sarva-lakṣaṇa' aligns with iconographic and auspicious-mark traditions used in evaluating ideal forms—whether of kings, images, or consecrated persons.