BṚHADĀRAṆYAKA UPANISHAD · 2.2.2

तम् एताः सप्ताक्षितय उपतिष्ठन्ते ।
तद् या इमा अक्षंल् लोहिन्यो राजयस् ताभिर् एनं रुद्रो ऽन्वायत्तः ।
अथ या अक्षन्न् आपस् ताभिः पर्जन्यः ।
या कनीनका तयादित्यः ।
यत् कृष्णं तेनाग्निर् ।
यच् छुक्लं तेनेन्द्रः ।
अधरयैनं वर्तन्या पृथिव्य् अन्वायत्ता ।
द्यौर् उत्तरया ।
नास्यान्नं क्षीयते य एवं वेद ॥

tam etāḥ saptākṣitaya upatiṣṭhante ।
tad yā imā akṣaṃl lohinyo rājayas tābhir enaṃ rudro ’nvāyattaḥ ।
atha yā akṣann āpas tābhiḥ parjanyaḥ ।
yā kanīnakā tayādityaḥ ।
yat kṛṣṇaṃ tenāgnir ।
yac chuklaṃ tenendraḥ ।
adharayainaṃ vartanyā pṛthivy anvāyattā ।
dyaur uttarayā ।
nāsyānnaṃ kṣīyate ya evaṃ veda ॥

Then the seven imperishable ones approach him. There are the red lines in the eye, and by them Rudra clings to him. There is the water in the eye, and by it Parganya clings to him. There is the pupil, and by it Âditya (sun) clings to him, There is the dark iris, and by it Agni clings to him. There is the white eye-ball, and by it Indra, clings to him. With the lower eye-lash the earth, with the upper eye-lash the heaven clings to him. He who knows this, his food does never perish.

F. Max Müller · The Upanishads, Sacred Books of the East 15 (1884)