MUṆḌAKA UPANISHAD · 1.1.6

यत्तदद्रेश्यमग्राह्यमगोत्रमवर्णमचक्षुःश्रोत्रं तदपाणिपादम् ।
नित्यं विभुं सर्वगतं सुसूक्ष्मं
तदव्ययं यद्भूतयोनिं परिपश्यन्ति धीराः ॥ ६॥

yattadadreśyamagrāhyamagotramavarṇamacakṣuḥśrotraṃ tadapāṇipādam ।
nityaṃ vibhuṃ sarvagataṃ susūkṣmaṃ
tadavyayaṃ yadbhūtayoniṃ paripaśyanti dhīrāḥ ॥ 6॥

That the invisible, that the unseizable, without connections, without hue, without eye or ear, that which is without hands or feet, eternal, pervading, which is in all things and impalpable, that which is Imperishable, that which is the womb of creatures sages behold everywhere.

Sri Aurobindo · CWSA 18, p. 132