व्यासशिष्योत्पत्तिवर्णन (Origins/Enumeration of Vyāsa’s Disciplic Succession) — Chapter on Vedic Transmission Lineages
सहस्राणि ऋचां चाष्टौ षट्शतानि तथैव च / एताः पञ्चदशान्याश्च दशान्या दशभिस्तथा
sahasrāṇi ṛcāṃ cāṣṭau ṣaṭśatāni tathaiva ca / etāḥ pañcadaśānyāśca daśānyā daśabhistathā
The ṛc-verses are eight thousand in number, and likewise six hundred besides. Beyond these are said to be fifteen more, and ten more, and again in tens with tens.