योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-167, verse-19

अथवा सर्वमेवेदं जाग्रद्रूपं सदैव च ।
सर्वदैव च वा स्वप्नः सुषुप्तं सर्वदैव च ॥ १९ ॥

athavā sarvamevedaṃ jāgradrūpaṃ sadaiva ca ,
sarvadaiva ca vā svapnaḥ suṣuptaṃ sarvadaiva ca 19

19. Or it may be said in respect to the soul, that it is either always wakeful, or in its ever dreaming state; or in a state of continuous rest and sleep.