Matsya Purana — Marks of Karma-yoga and the Five Great Daily Sacrifices
व्रतोपवासैर् विधिवच्छ्रद्धया च विमत्सरः यो ऽसाव् अतीन्द्रियः शान्तः सूक्ष्मो ऽव्यक्तः सनातनः वासुदेवो जगन्मूर्तिस् तस्य सम्भूतयो ह्य् अमी //
vratopavāsair vidhivacchraddhayā ca vimatsaraḥ yo 'sāv atīndriyaḥ śāntaḥ sūkṣmo 'vyaktaḥ sanātanaḥ vāsudevo jaganmūrtis tasya sambhūtayo hy amī //
By vows and fasting duly performed, and with faith—free from envy—one should worship Vasudeva, who is beyond the senses, peaceful, subtle, unmanifest, and eternal. He is the embodied form of the universe; indeed, all these beings are His manifestations.
It presents Vasudeva as jaganmūrti—the universe itself—and states that all beings are His manifestations, implying that creation (and by extension dissolution) are modes of the same Supreme reality.
It recommends disciplined, rule-based observances (vrata) and fasting (upavāsa) done with śraddhā and without envy—ethical inner qualifications expected of rulers and householders who seek merit and spiritual steadiness.
Ritually, it emphasizes vidhivat performance—doing observances according to proper procedure—supporting the Matsya Purana’s broader insistence on correct ritual method even when the verse is primarily theological.