Śrīmad-Bhāgavatam · Text 4.29.81
Who is speaking and story frame
प्राचीनबर्ही राजर्षि: प्रजासर्गाभिरक्षणे ।
आदिश्य पुत्रानगमत्तपसे कपिलाश्रमम् ॥ ८१ ॥
prācīnabarhī rājarṣiḥ
prajā-sargābhirakṣaṇe
ādiśya putrān agamat
tapase kapilāśramam
In the presence of his ministers, the saintly King Prācīnabarhi left orders for his sons to protect the citizens. He then left home and went off to undergo austerities in a holy place known as Kapilāśrama.
Read Śrīla Prabhupāda's purport on Vedabase.io