Matsya Purana — Brahmā–Gāyatrī as a Divine Pair and the Early Genealogies of Creation
ततः साध्यगणानीशस् त्रिनेत्रानसृजत्पुनः कोटीश्च चतुरशीतिं जरामरणवर्जिताः //
tataḥ sādhyagaṇānīśas trinetrānasṛjatpunaḥ koṭīśca caturaśītiṃ jarāmaraṇavarjitāḥ //
Then the Lord of the hosts (Īśa), the Three-eyed one, again brought forth the Sādhyas—eighty-four crores in number—free from old age and death.
It describes secondary creation (sarga): Īśa/Śiva generates a divine class (the Sādhyas) as part of the ordered re-manifestation of beings, emphasizing their deathless, non-decaying nature rather than dissolution.
Indirectly, it frames a cosmic hierarchy where divine beings uphold order; in the Purāṇic ethic, kings and householders are likewise expected to sustain dharma and social order in imitation of cosmic governance.
No direct Vāstu or iconographic rule appears here; its ritual takeaway is theological—invoking Īśa/Trinetra and divine hosts (like the Sādhyas) as part of cosmological recitations used to sanctify rites.