After delivering charge of his kingdom to Aṁśumān and thus being freed from all material anxiety and bondage, Sagara Mahārāja, following the means instructed by Aurva Muni, achieved the supreme destination.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
तं परिक्रम्य शिरसा प्रसाद्य हयमानयत् । सगरस्तेन पशुना क्रतुशेषं समापयत्
taṃ parikramya śirasā prasādya hayamānayat | sagarastena paśunā kratuśeṣaṃ samāpayat
SB 9.8.30