Subhashitams from Mahanarayana Upanishad

न कर्मणा न प्रजया धनेन त्यागेनैके अमृतत्वमानशुः। परेण नाकं निहितं गुहायां विभ्राजते यद् यतयो विशन्ति॥

na karmaṇā na prajayā dhanena tyāgenaike amṛtatvam ānaśuḥ । pareṇa nākaṃ nihitaṃ guhāyāṃ vibhrājate yad yatayo viśanti ॥

The Kaivalya Upanishad teaches that immortality is attained through renunciation, selfless dedication, and fidelity to noble ideals.