Dasuttarasutta 1.8.60

1.8.60

Yaṃpāvuso, khīṇāsavassa bhikkhuno aniccato sabbe saṅkhārā yathābhūtaṃ sammappaññāya sudiṭṭhā honti, idampi khīṇāsavassa bhikkhuno balaṃ hoti, yaṃ balaṃ āgamma khīṇāsavo bhikkhu āsavānaṃ khayaṃ paṭijānāti: ‘khīṇā me āsavā’ti.

This is a power that a mendicant who has ended the defilements relies on to claim: ‘My defilements have ended.’