Matsya Purana — The Episode of Madhu and Kaiṭabha: Gunas
*ब्रह्मोवाच यत्नाद् योगवतो दृष्ट्या योगः पूर्वं मयार्जितः तं समाधाय गुणवत् सत्त्वं चास्मि समाश्रितः //
*brahmovāca yatnād yogavato dṛṣṭyā yogaḥ pūrvaṃ mayārjitaḥ taṃ samādhāya guṇavat sattvaṃ cāsmi samāśritaḥ //
Brahmā said: By diligent effort, through the vision of a disciplined yogin, I formerly attained yoga. Establishing myself in that samādhi, I have taken refuge in sattva endowed with excellence (the elevating quality).
Indirectly, it points to the inner means that transcends cosmic change: Brahmā emphasizes yoga and samādhi grounded in sattva, implying that liberation-knowledge is stable even when creation and dissolution occur.
It frames an ethical-practical ideal: sustained effort (yatna), disciplined perception, and cultivating sattva (clarity, restraint, purity) support right governance and household dharma by steadying judgment and reducing rajas/tamas-driven impulses.
No direct Vāstu or iconographic rule is stated; the ritual takeaway is internal—samādhi and sattva are presented as the core ‘inner rite’ that perfects external observances.