योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-41, verse-18

सुरत्नजठराकारं घनमप्यम्बरोपमम् ।
प्रतिबिम्बमिव क्षुब्धमप्यक्षुब्धमसच्च सत् ॥ १८ ॥

suratnajaṭharākāraṃ ghanamapyambaropamam ,
pratibimbamiva kṣubdhamapyakṣubdhamasacca sat 18

18. The universe seems as womb of a luminous gem, and though it is thickly peopled everywhere, yet it is as void as empty air; it is a nil and ens at the same time, and as something and nothing of itself.