Katha Upanishad - Verse 2.1.7
Text: या प्राणेन संभवत्यदितिर्देवतामयी । गुहां प्रविश्य तिष्ठन्तीं या भूतेभिर्व्यजायत । एतद्वैतत् ॥ ७ ॥ yā prāṇena saṃbhavatyaditirdevatāmayī | guhāṃ praviśya tiṣṭhantīṃ yā bhūtebhirvyajāyata | etadvaitat || 7 || 7. Who is born along with prapa manifested as all Devas, the eater, seated, having entered the heart, who was born with the elements. This verily is that. Shankara’s Commentary: Devatamayi_ in the form of all the Devatas. Prapena as Hiranyagarbha; is born from the highest Brahman; aditi so called, because she eats as it were sounds, etc....