SB 1.17.21

sūta uvāca
evaṁ dharme pravadati
 sa samrāḍ dvija-sattamāḥ
samāhitena manasā
 vikhedaḥ paryacaṣṭa tam
Synonyms: 
sūtaḥ uvāca — Sūta Gosvāmī said; evam — so; dharme — the personality of religion; pravadati — thus having spoken; saḥ — he; samrāṭ — the Emperor; dvija-sattamāḥ — O best among the brāhmaṇas; samāhitena — with proper attention; manasā — by the mind; vikhedaḥ — without any mistake; paryacaṣṭa — counterreplied; tam — unto him.
Translation: 
Sūta Gosvāmī said: O best among the brāhmaṇas, the Emperor Parīkṣit, thus hearing the personality of religion speak, was fully satisfied, and without mistake or regret he gave his reply.
Purport: 

The statement of the bull, the personality of religion, was full of philosophy and knowledge, and the King was satisfied, since he could understand that the suffering bull was not an ordinary one. Unless one is perfectly conversant with the law of the Supreme Lord, one cannot speak such things touching philosophical truths. The Emperor, being also on an equal level of sagacity, replied to the point, without doubts or mistakes.