śrī-bhagavān uvāca
svāyambhuva brahma-satraḿ
jana-loke 'bhavat purā
tatra-sthānāḿ mānasānāḿ
munīnām ūrdhva-retasām
sri-bhagavan uvaca -- the Supreme Lord said; svayambhuva -- O son of self-born Brahma; brahma -- performed by the utterance of transcendental sound; satram -- a sacrifice; jana-loke -- on the planet Janaloka; abhavat -- occurred; pura -- in the past; tatra -- there; sthanam -- among those who resided; manasanam -- born from the mind (of Brahma); muninam -- sages; urdhva -- (flowing) upward; retasam -- whose semen.
The Personality of Godhead said: O son of self-born Brahma, once long ago on Janaloka, wise sages who resided there performed a great sacrifice to the Absolute Truth by vibrating transcendental sounds. These sages, mental sons of Brahma, were all perfect celibates.
Srila Sridhara Svami explains that the word satram here refers to a Vedic sacrifice in which all the participants are equally qualified to serve as priests. In this instance, each of the sages present in Janaloka could speak equally well on the topic of Brahman.
