Srimad-Bhagavatam: Canto 12 - Chapter 6 - Verse 50
Srimad-Bhagavatam: Canto 12 - Chapter 1 - Verse 50 Sanskrit: ऋगथर्वयजु:साम्नां राशीरुद्धृत्य वर्गश: ।चतस्र: संहिताश्चक्रे मन्त्रैर्मणिगणा इव ॥ ५० ॥ ITRANS: ṛg-atharva-yajuḥ-sāmnāṁrāśīr uddhṛtya vargaśaḥcatasraḥ saṁhitāś cakremantrair maṇi-gaṇā iva Translation: Śrīla Vyāsadeva separated the mantras of the Ṛg, Atharva, Yajur and Sāma Vedas into four divisions, just as one sorts out a mixed collection of jewels into piles. Thus he composed four distinct Vedic literatures. Purport: When Lord Brahmā first spoke the four Vedas with his four mouths, the mantras were mixed together like an unsorted collection of various types of jewels....