‘Dvaa suparnaa’ in the Rudra hridaya upanishad

https://sanskritdocuments.org/doc_upanishhat/rudrahridaya.html

The popular Mundaka mantra is available in the above Upanishad, teaching the Advaitic identity:

द्वौ सुपर्णौ शरीरेऽस्मिञ्जीवेशाख्यौ सह स्थितौ ।

तयोर्जीवः फलं भुङ्क्ते कर्मणो न महेश्वरः ॥ ४१॥

केवलं साक्षिरूपेण विना भोगं महेश्वरः ।

प्रकाशते स्वयं भेदः कल्पितो मायया तयोः ॥ ४२॥

There are two birds residing together in this body called Jiva and Isvara; of them Jiva eats the fruits of action and Mahesvara does not. He remains there shining Himself, as a mere witness without tasting the fruit of it.

घटाकाशमठाकाशौ यथाकाशप्रभेदतः ।

कल्पितौ, परमौ जीवशिवरूपेण कल्पितौ ॥ ४३॥

The difference between them is attributed by Maya. Like the difference …. the space of the pot and room, is the difference attributed between Siva and Jiva.

तत्त्वतश्च शिवः साक्षाच्चिज्जीवश्च स्वतः सदा ।

चिच्चिदाकारतो भिन्ना न भिन्ना चित्त्वहानितः ॥ ४४॥

In reality Siva is chit (consciousness itself) and Jiva also is always chit. The chit does not differ in its nature. If it does so, it will lose the state of its own nature.

चितश्चिन्न चिदाकाराद्भिद्यते जडरूपतः ।

भिद्यते चेज्जडो भेदश्चिदेका सर्वदा खलु ॥ ४५॥

The chit will not differ in itself as it does not belong to the nature of inert matter (Jada). If it does so, then the difference will be of jada. The chit always is one. (In other words this implies that difference can be there only in jaDa, inert and not in Chit, Consciousness)

तर्कतश्च प्रमाणाच्च चिदेकत्वव्यवस्थितेः ।

चिदेकत्वपरिज्ञाने न शोचति न मुह्यति ॥ ४६॥

Thus the oneness of the chit is established by reasoning and by authorities (Pramanas). By realizing the oneness of the chit, one does not underdo misery nor bewilderment.

अद्वैतं परमानन्दं शिवं याति तु कैवलम् ॥ ४७॥

He ‘attains” Siva-hood, Who is without duality and who is the Supreme bliss itself.

अधिष्ठानं समस्तस्य जगतः सत्यचिद्घनम् ।

अहमस्मीति निश्चित्य वीतशोको भवेन्मुनिः ॥ ४८॥

By realizing Him, who is the support of all the worlds, Who is the sat and chit itself, ‘I am He’, the sage becomes freed from Samsara.

Read more at: https://shaivam.org/scripture/English-Translation/rudra-hridayopanishat/#gsc.tab=0

Read Upanishad Brahma Yogin’s commentary on this entire Upanishad here: https://cloudup.com/cQOnSmANOjO

~ रुद्रहृदयोपनिषत्

Om Tat Sat