KAIVALYA UPANISHAD · 16

यत्परं ब्रह्म सर्वात्मा विश्वस्यायतनं महत् ।
सूक्ष्मात्सूक्ष्मतरं नित्यं तत्त्वमेव त्वमेव तत् ॥ १६॥

yatparaṃ brahma sarvātmā viśvasyāyatanaṃ mahat ।
sūkṣmātsūkṣmataraṃ nityaṃ tattvameva tvameva tat ॥ 16॥

Parabrahman, which is of all forms, which is the Supreme Abode of this universe, which is the most subtle of the subtle and which is eternal, is only yourself. You are only That.

K. Narayanasvami Aiyar · Thirty Minor Upanishads (1914), pp. 31–33