Śrīmad-Bhāgavatam · Text 10.71.3
Who is speaking and story frame
यष्टव्यं राजसूयेन दिक्चक्रजयिना विभो ।
अतो जरासुतजय उभयार्थो मतो मम ॥ ३ ॥
yaṣṭavyam rājasūyena
dik-cakra-jayinā vibho
ato jarā-suta-jaya
ubhayārtho mato mama
Only one who has conquered all opponents in every direction can perform the Rājasūya sacrifice, O almighty one. Thus, in my opinion, conquering Jarāsandha will serve both purposes.
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.