Srimad-Bhagavatam: Canto 12 - Chapter 1 - Verse 34
Sanskrit:
यदैवमेतेन विवेकहेतिनामायामयाहङ्करणात्मबन्धनम् ।छित्त्वाच्युतात्मानुभवोऽवतिष्ठतेतमाहुरात्यन्तिकमङ्ग सम्प्लवम् ॥ ३४ ॥
ITRANS:
yadaivam etena viveka-hetināmāyā-mayāhaṅkaraṇātma-bandhanamchittvācyutātmānubhavo ’vatiṣṭhatetam āhur ātyantikam aṅga samplavam
Translation:
My dear Parīkṣit, when the illusory false ego that binds the soul has been cut off with the sword of discriminating knowledge and one has developed realization of Lord Acyuta, the Supreme Soul, this is called the ātyantika, or ultimate, annihilation of material existence.