Śrīmad-Bhāgavatam · Text 4.29.1
Who is speaking and story frame
प्राचीनबर्हिरुवाच
भगवंस्ते वचोऽस्माभिर्न सम्यगवगम्यते ।
कवयस्तद्विजानन्ति न वयं कर्ममोहिता: ॥ १ ॥
prācīnabarhir uvāca
bhagavaṁs te vaco ’smābhir
na samyag avagamyate
kavayas tad vijānanti
na vayaṁ karma-mohitāḥ
King Prācīnabarhi replied: My dear lord, we could not appreciate completely the purport of your allegorical story of King Purañjana. Actually, those who are perfect in spiritual knowledge can understand, but for us, who are overly attached to fruitive activities, to realize the purpose of your story is very difficult.
Read Śrīla Prabhupāda's purport on Vedabase.io