योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-62, verse-43

साकारस्यैव यत्स्वप्नजगत्तद्व्योम निर्मलम् ।
निराकारस्य चिद्व्योम्नः सर्गः स्वप्नः कथं न खम् ॥ ४३ ॥

sākārasyaiva yatsvapnajagattadvyoma nirmalam ,
nirākārasya cidvyomnaḥ sargaḥ svapnaḥ kathaṃ na kham 43

43. When the visionary world, appearing in a dream of corporeal beings as ourselves, proves to be but empty void and vacuity; how do you take it for a material substance, when it is contained in its immaterial form, in the incorporeal spirit and intellect of God, and why not call it an empty air, when it resides in the manner of a dream in the Divine Intellect?