One verse

Srimad Bhagavatam 8.24.56

8.24.56

अश्रौषीद‍ृषिभि: साकमात्मतत्त्वमसंशयम् । नाव्यासीनो भगवता प्रोक्तं ब्रह्म सनातनम् ॥ ५६ ॥

asrausid rsibhih sakam atma-tattvam asamsayam navy asino bhagavata proktam brahma sanatanam

asrausit
he heard
rsibhih
the great saintly persons
sakam
with
atma-tattvam
the science of self-realization
asamsayam
without any doubt (because it was spoken by the Supreme Lord)
navi asinah
sitting in the boat
bhagavata
by the Supreme Personality of Godhead
proktam
explained
brahma
all transcendental literatures
sanatanam
eternally existing.

While sitting in the boat, King Satyavrata, accompanied by the great saintly persons, listened to the instructions of the Supreme Personality of Godhead in regard to self-realization. These instructions were all from the eternal Vedic literature (brahma). Thus the King and sages had no doubt about the Absolute Truth.