Matsya Purana — Navagraha Sacrifice for Planetary Pacification and Prosperity
रुद्रायतनभूमौ वा चतुरस्रमुदङ्मुखम् दशहस्तमथाष्टौ वा हस्तान्कुर्याद्विधानतः //
rudrāyatanabhūmau vā caturasramudaṅmukham daśahastamathāṣṭau vā hastānkuryādvidhānataḥ //
On the ground chosen for a Rudra (Śiva) shrine, one should, according to rule, lay out a square plan facing north, measuring either ten cubits or else eight cubits in extent.
This verse does not discuss Pralaya; it is a Vastuvidya rule prescribing the orientation and standard measurements for a Rudra-temple plan.
It frames righteous patronage and correct construction: a king or householder is expected to build and endow temples according to śāstric measurements and orientation, ensuring ritual propriety and communal merit.
It specifies a square, north-facing Rudra-shrine layout with standard extents of 10 or 8 hastas, emphasizing canonical proportion (māna) and directional alignment (dik-nirṇaya) in Puranic temple architecture.