Verse 38

असत्ये सत्यता साधो शाश्वती परिलक्ष्यते ।शून्येन ध्यानयोगेन शाश्वतं पदमाप्यते

In plain words

In the untrue, good one, an eternal truthfulness is discerned; through a dhyānayoga that is śūnya, empty, the eternal state is attained.