प्राणस्पन्दनमेवेदं चित्तद्वारेण दृश्यते ।जगन्नामागतं व्योम्नि नीलत्वादिवदीदृशम्
In plain words
This very pulsation of prāṇa is seen, through the doorway of citta, as this that has taken the name 'world' — just as blueness and the like is seen in the sky.