Mahabharata 3.235.14

उपकारो महांस्तात कृतोऽयं मम खेचराःकुलं न परिभूतं मे मोक्षेणास्य दुरात्मनः

upakāro mahāṃstāta kṛto'yaṃ mama khecarāḥkulaṃ na paribhūtaṃ me mokṣeṇāsya durātmanaḥ

Our plain-language meaning of this verse is waiting for scholar review.