Bhagavatapurana 2.6.39

2.6.39

viśuddhaṃ kevalaṃ jñānaṃ pratyak samyag avasthitam /
satyaṃ pūrṇam anādyantaṃ nirguṇaṃ nityam advayam //

39. It is nothing but consciousness which is pure (as not related to an object) and the inmost nature of (hence the principle underlying) all, and good (not assailed by doubt or misapprehension) and changeless as being destitute of gunas (attributes); it is the Truth that is perfect and (hence) destitute of beginning and end, and is ever without a second.