Mundaka Upanishad Verse 1.1.9
Sanskrit
यः सर्वज्ञः सर्वविद्यस्य ज्ञानमयं तापः । तस्मादेतद्ब्रह्म नाम रूपमन्नं च जायाते ॥ ९ ॥
Transliteration
yaḥ sarvajñaḥ sarvavidyasya jñānamayaṃ tāpaḥ | tasmādetadbrahma nāma rūpamannaṃ ca jāyāte || 9 ||
Translation
From the Brahman who knows all and everything of all, and whose tapas is in the nature of knowledge, this Brahma (Hiranyagarbha), name, form and food are produced.
Reference: Mundaka Upanishad

Muni's Play