Matsya Purana — Dialogue of Aṣṭaka and Yayāti: Exhaustion of Merit
*अष्टक उवाच किं स्वित्कृत्वा लभते तात संज्ञां मर्त्यः श्रेष्ठां तपसा विद्यया वा तन्मे पृष्टः शंस सर्वं यथावच् छुभांल्लोकान् येन गच्छेत्क्रमेण //
*aṣṭaka uvāca kiṃ svitkṛtvā labhate tāta saṃjñāṃ martyaḥ śreṣṭhāṃ tapasā vidyayā vā tanme pṛṣṭaḥ śaṃsa sarvaṃ yathāvac chubhāṃllokān yena gacchetkrameṇa //
Aṣṭaka said: “Dear father, by doing what does a mortal obtain the highest renown and standing—by austerity, or by sacred knowledge? Since I have asked you, tell me everything rightly, by which one may proceed step by step to the auspicious worlds.”
This verse does not discuss pralaya; it focuses on human effort—especially austerity (tapas) and knowledge (vidyā)—as means to attain higher status and auspicious realms.
It frames a core dharma-question relevant to all social roles: whether disciplined practice (tapas) or right knowledge (vidyā) is the primary means to prosperity of reputation and posthumous progress—guiding kings and householders toward merit-based, gradual spiritual advancement.
No vastu/temple-architecture rule is stated here; the verse is an ethical-philosophical inquiry that can undergird ritual life by emphasizing correct method (yathāvat) and gradual progress (krameṇa) toward auspicious results.