The face of truth is covered with a golden disc. Uncover it, O Pushan (Sun), for the sight of one whose dharma is truth.
Isha Upanishad
ईशोपनिषद्
मूल श्लोकः
हिरण्मयेन पात्रेण सत्यस्यापिहितं मुखम्। तत्त्वं पूषन्नपावृणु सत्यधर्माय दृष्टये॥
hiraṇmayena pātreṇa satyasyāpihitaṁ mukham tat tvaṁ pūṣann apāvṛṇu satya-dharmāya dṛṣṭaye
IsU 1.15