Śrīmad-Bhāgavatam · Text 4.19.26
Who is speaking and story frame
तदभिज्ञाय भगवान्पृथु: पृथुपराक्रम: ।
इन्द्राय कुपितो बाणमादत्तोद्यतकार्मुक: ॥ २६ ॥
tad abhijñāya bhagavān
pṛthuḥ pṛthu-parākramaḥ
indrāya kupito bāṇam
ādattodyata-kārmukaḥ
Mahārāja Pṛthu, who was celebrated as very powerful, immediately took up his bow and arrows and prepared to kill Indra himself, because Indra had introduced such irregular sannyāsa orders.
Read Śrīla Prabhupāda's purport on Vedabase.io