Verse 35

अदृश्यं सर्वभूतानां प्राप्यं गलितचेतसाम् ।एतत्तद्दृश्यते सद्भिः परं व्योमातिनिर्मलम्

In plain words

Invisible to all beings, to be attained only by those whose mind has dissolved away -- this is that supreme sky, utterly stainless, which the good alone behold.