योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-62, verse-28

यथैव तत्तथैवेदं तथैवेदं यथैव तत् ।
असत्सत्तामिव गते सच्चासदिव च स्थितम् ॥ २८ ॥

yathaiva tattathaivedaṃ tathaivedaṃ yathaiva tat ,
asatsattāmiva gate saccāsadiva ca sthitam 28

28. This is as that One, and that is as this. (i.e. The world appears to be as the intellect shows it &c.). But the unreal (matter) is taken for the real (spirit); and the real is understood as an unreality.