CHĀNDOGYA UPANISHAD · 6.14.1

यथा सोम्य पुरुषं गन्धारेभ्यो ऽभिनद्धाक्षम् आनीय तं ततो ऽतिजने विसृजेत् ।
स यथा तत्र प्राङ् वोदङ् वा अधराङ् वा प्रत्यङ् वा प्रध्मायीताभिनद्धाक्ष आनीतो ऽभिनद्धाक्षो विसृष्टः ॥

yathā somya puruṣaṃ gandhārebhyo ’bhinaddhākṣam ānīya taṃ tato ’tijane visṛjet ।
sa yathā tatra prāṅ vodaṅ vā adharāṅ vā pratyaṅ vā pradhmāyītābhinaddhākṣa ānīto ’bhinaddhākṣo visṛṣṭaḥ ॥

'As one might lead a person with his eyes covered away from the Gandhâras, and leave him then in a place where there are no human beings; and as that person would turn towards the east, or the north, or the west, and shout, "I have been brought here with my eyes covered, I have been left here with my eyes covered,"

F. Max Müller · The Upanishads, Sacred Books of the East 1 (1879)