Matsya Purana — Nārāyaṇa as Haṃsa in the Cosmic Ocean: Vedic Yajña-Puruṣa and Mārkaṇḍeya’s Vi...
ब्रह्माणं प्रथमं वक्त्राद् उद्गातारं च सामगम् होतारमपि चाध्वर्युं बाहुभ्यामसृजत्प्रभुः //
brahmāṇaṃ prathamaṃ vaktrād udgātāraṃ ca sāmagam hotāramapi cādhvaryuṃ bāhubhyāmasṛjatprabhuḥ //
The Lord first brought forth the Brahman-priest from His mouth; and He created the Udgātṛ, the chanter of Sāma, as well as the Hotṛ and the Adhvaryu from His two arms.
It presents a creation-order motif: the Lord manifests the key Vedic priestly functions from His body, emphasizing how yajña (sacrificial order) is established after cosmic re-origination rather than describing dissolution itself.
It grounds dharma in properly conducted yajña: kings and householders support and appoint the correct ṛtvij-priests (Brahman, Hotṛ, Adhvaryu, Udgātṛ) so rites are performed without error and society remains aligned with sacred order.
Ritually, it defines the canonical yajña-officiants and their Vedic specializations (Ṛg/Hotṛ, Yajur/Adhvaryu, Sāma/Udgātṛ, Brahman as overseer), which is foundational for planning any consecration rite tied to temple-building and Vastu-linked ceremonies.