Matsya Purana — Yayāti and the Kings’ Dialogue on Heavenly Worlds
साध्वष्टक प्रब्रवीमीह सत्यं प्रतर्दनं वसुमन्तं शिबिं च / सर्वे देवा मुनयश्च लोकाः सत्येन पूज्या इति मे मनोगतम् //
sādhvaṣṭaka prabravīmīha satyaṃ pratardanaṃ vasumantaṃ śibiṃ ca / sarve devā munayaśca lokāḥ satyena pūjyā iti me manogatam //
Truly, I declare here this noble teaching: remember Pratardana, Vasumant, and Śibi as models of truth. For it is my settled conviction that all—gods, sages, and the worlds—are to be honored through truthfulness.
This verse is not about pralaya or cosmology; it emphasizes satya (truth) as a universal principle by which even gods, sages, and all worlds are honored.
It frames truthfulness as a core duty of ethical life: kings gain legitimacy and lasting honor through satya, and householders uphold social trust and dharma through truthful speech and integrity.
No direct Vāstu/temple-architecture rule is stated; the ritual takeaway is that truth itself is presented as a prerequisite for genuine pūjā (worthiness of honor) and moral sanctity.