Verse 17

अहं जगद्वा सकलं शून्यं व्योमसमं सदा ।एवमेष चतुर्थोऽन्यो निश्चयो मोक्षसिद्धये

In plain words

'I, or the whole world entire, am ever void, like the sky' — thus this fourth and further niścaya leads to the attainment of mokṣa.