Garudapurana 1.41.2

1.41.2

oṃ namo bhagavati ṛkṣakarṇi caturbhuje ūrdhvakeśi trinayane kālarātri mānuṣāṇāṃ vasārudhirabhojane amukasya prāptakālasya mṛtyuprade huṃ phaṭ hanahana dahadaha māṃsarudhiraṃ pacapaca ṛkṣapatni svāhā / na tithirna ca nakṣatraṃ nopavāso vidhīyate //

“Oṃ, homage to the Blessed Goddess, Ṛkṣakarṇī, four-armed, upright-haired, three-eyed, Kālarātri, devourer of the fat and blood of men, bestow death upon so-and-so whose time has come! Huṃ phaṭ, strike, strike! Burn, burn! Cook, cook the flesh and blood, O wife of Ṛkṣa, svāhā!” Neither a lunar day nor a lunar mansion nor fasting is prescribed [for this].