Śrīmad-Bhāgavatam · Text 11.2.27
Who is speaking and story frame
तान् रोचमानान् स्वरुचा ब्रह्मपुत्रोपमान् नव ।
पप्रच्छ परमप्रीत: प्रश्रयावनतो नृप: ॥ २७ ॥
tān rocamānān sva-rucā
brahma-putropamān nava
papraccha parama-prītaḥ
praśrayāvanato nṛpaḥ
Overwhelmed by transcendental joy, the King humbly bowed his head and then proceeded to question the nine sages. These nine great souls glowed with their own effulgence and thus appeared equal to the four Kumāras, the sons of Lord Brahmā.
Read the purport on Vedabase.ioFrom Canto 10, chapter 14 onward, the translation and purports were completed by Śrīla Prabhupāda's disciples after his departure, and published by the Bhaktivedanta Book Trust.