Bhagavatapurana 1.8.13

1.8.13

vyasanaṃ vīkṣya tat teṣām ananyaviṣayātmanām /
sudarśanena svāstreṇa svānāṃ rakṣāṃ vyadhādvibhuḥ //

13. Seeing the peril of those (Pandu's sons) who think of (depend on) none other (than Himself), the Almighty Lord ordained the protection of his devotees by means of His own weapon Sudarsana.