Bhagavatapurana 5.18.8

5.18.8

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oṃ namo bhagavate narasiṃhāya namas tejas-tejase āvir-āvirbhava vajra-nakha vajra-daṃṣṭra karmāśayān randhaya randhaya tamo grasa grasa oṃ svāhā abhayam abhayam ātmani bhūyiṣṭhā oṃ kṣraum //

8. “I bow to the glorious Lord Narasimha, bow to the Light of lights; reveal Thyself in unmistakable forms, O Lord of adamantine claws, adamantine teeth; burn down the sources of Karma, swallow up darkness. Mayst Thou become the fearless asylum within self, O praise-worthy Lord.