Madhvacharya's Dvaita Vedanta and translation of Sarvamoola containing Bhagavad Gita, Upanishads, and Brahmasutra.

Kāthakopaniṣat Bhāshya (काठकोपनिषत् )

यदा सर्वे प्रभिद्यन्ते हृदयस्येह ग्रन्थयः। अथ मर्त्योऽमृतो भवति एतावदनुशासनम् ॥१५॥

When all the knots of the heart are broken, the mortal becomes immortal; this is the essence of the teaching.

'Knots of the heart' are nothing but the knots of false knowledge.

मिथ्याज्ञानग्रन्थिभिस्तु नितरां मुच्यते यदा। तदाऽमृतत्वमेवैति तदर्थं चानुशासनम् ॥१५॥

When one is completely released from the knots of false knowledge, then indeed one attains immortality; for that purpose is the instruction.

बहुचित्रजगद्बहुधाकरणात् परशक्तिरनन्तगुणः परमः ।
सुखरूपममुष्य पदं परमं स्मरतस्तु भविष्यति तत्सततम् ॥
"The one who has created this variegated vast universe with varied forms has infinite power and is of infinite auspicious qualities. He certainly bestows the highest state of bliss to those who meditate on his ever happy essence." -Dwādasha stōtra 4.3

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