Verse 20

इन्द्रजालमिदं विद्धि मायारचितपञ्जरम् ।मनोमनननिर्माणं न सन्नासदिव स्थितम्

In plain words

Know this to be an indrajāla, a cage fashioned by māyā, a construction of the mind's own thinking -- standing, as it were, as neither being nor non-being.