Vanadurgā Upaniṣad 3.7.p1

3.7.p1

bhāskarāya vidmahe mahādyutikarāya dhīmahi | tanno ādityaḥ pracodayāt |
ghṛṇiḥ sūrya ādityo na prabhāvātyakṣaram | madhu kṣaranti tadrasam |
satyaṃ vai tadrasamāpo jyotī rasoghnutaṃ brahma bhūrbhuvaḥsvarom |
śrīṃ śrīṃ so'hamarkamahamahaṃ jyotirahaṃ śivaḥ |
ātmajyotirahaṃ śukraḥ sarvajyotirasopramom ||

We know the Light-Maker; we meditate on the Producer of Great Radiance; may that Āditya inspire us. / The radiant Sun, Āditya, the imperishable one whose glory does not fail; they trickle that sweet essence. / Truth indeed is that essence, the waters, light, the immortal essence, Brahman, bhūḥ, bhuvaḥ, svaḥ, oṃ. / Śrīṃ śrīṃ I am He, I am the Sun, I am the light, I am Śiva; / I am the inner light, I am the bright fluid, the essence of all light, om.