<blockquote>एतस्य वा महतो भूतस्य नि:श्वसितमेतद् यद् ऋग्वेदो यजुर्वेद: सामवेदोऽथर्ववेद: || (Brih. Upan. 4.5.11)</blockquote><blockquote>Meaning: From the breath (exhalation) of this Supreme Being have arisen the Rigveda, Yajurveda, Samaveda and Atharvanaveda.</blockquote>
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<blockquote>....एतस्य वा महतो भूतस्य नि:श्वसितमेतद् यद् ऋग्वेदो यजुर्वेद: सामवेदोऽथर्वाङ्गिरस .... || ([https://archive.org/stream/Brihadaranyaka.Upanishad.Shankara.Bhashya.by.Swami.Madhavananda#page/n805/mode/2up Brih. Upan. 4.5.11])</blockquote><blockquote>Meaning: From the breath (exhalation) of this Supreme Being have arisen the Rigveda, Yajurveda, Samaveda and Atharvanaveda.</blockquote>