व्यासशिष्योत्पत्तिवर्णन (Origins/Enumeration of Vyāsa’s Disciplic Succession) — Chapter on Vedic Transmission Lineages
अश्वरूपाय मार्त्तण्डो याज्ञवक्ल्याय धीमते / यजूंष्यधीयते तानि ब्राह्मणा येन केनचित्
aśvarūpāya mārttaṇḍo yājñavaklyāya dhīmate / yajūṃṣyadhīyate tāni brāhmaṇā yena kenacit
Mārtaṇḍa, the Sun, assuming the form of a horse, bestowed those Yajus hymns upon the wise Yājñavalkya—hymns recited by the Brahmins.