Mantra 15

यदा सर्वे प्रभिद्यन्ते हृदयस्येह ग्रन्थयः ।अथ मर्त्योऽमृतो भवत्येतावद्ध्यनुशासनम् ॥ १५ ॥

In plain words

When all the knots of the heart, here, are broken, then the mortal becomes immortal. This much, indeed, is the teaching.