Śrīmad-Bhāgavatam · Text 2.6.25
Who is speaking and story frame
वस्तून्योषधय: स्नेहा रसलोहमृदो जलम् ।
ऋचो यजूंषि सामानि चातुर्होत्रं च सत्तम ॥ २५ ॥
vastūny oṣadhayaḥ snehā
rasa-loha-mṛdo jalam
ṛco yajūṁṣi sāmāni
cātur-hotraṁ ca sattama
Other requirements are utensils, grains, clarified butter, honey, gold, earth, water, the Ṛg Veda, Yajur Veda and Sāma Veda and four priests to perform the sacrifice.
Read Śrīla Prabhupāda's purport on Vedabase.io