The Mukhya Upaniṣads

Kauṣītaki · Adhyāya 2 · Kauṣītaki 2.1

Passage 12

अथातो दैवः परिमर एतद्वै ब्रह्म दीप्यते यदग्निर्ज्वलत्यथैतन्म्रियते यन्न ज्वलति तस्यादित्यमेव तेजो गच्छति वायुं प्राण एतद्वै ब्रह्म दीप्यते यथादित्यो दृश्यतेऽथैतन्म्रियते यन्न दृश्यते तस्य चन्द्रमसमेव तेजो गचछति वायुं प्राण एतद्वै ब्रह्म दीप्यते यच्चन्द्रमा दृश्यते ।अथैतन्म्रियते यन्न दृश्यते तस्य विद्युतमेव तेजो गच्छति वायुं प्राण एतद्वै ब्रह्म दीप्यते यद्विद्युद्विद्योततेऽथैतन्म्रियते यन्न विद्योतते तस्य वायुमेव तेजो गच्छति वायुं प्राणः ।ता वा एताः सर्वा देवता वायुमेव प्रविश्य वायौ मृता न मृच्छन्ते तस्मादेव उ पुनरुदीरत इत्यधिदैवतमथाध्यात्मम् ॥ १२ ॥

In plain words

Now the dying-round of the gods. This Brahman shines when the fire blazes; and it dies when the fire does not blaze. Then its splendour goes to the sun and its breath to the wind. This Brahman shines when the sun is seen; and it dies when the sun is not seen. Then its splendour goes to the moon and its breath to the wind. This Brahman shines when the moon is seen; and it dies when the moon is not seen. Then its splendour goes to the lightning and its breath to the wind. This Brahman shines when the lightning flashes; and it dies when the lightning does not flash. Then its splendour goes to the wind and its breath to the wind. All these deities, having entered into the wind, do not perish when they die in the wind; and out of it they rise again. So much with respect to the gods. Now with respect to the self.