Nirguna and Saguna are classified only in duality. In non-dual reality there is neither the nirguna nor the saguna, everything is one.+

Nirguna (attributeless) is the nature of the Soul, the Self. The Saguna (attributed) is the nature of the mind, which is present in the form of the universe.

The Soul is the knower of the Saguna (mind). The Saguna (mind or the universe) is merely an illusion, from the standpoint of the nirguna, which is the Soul, the Self.

The Saguna (mind or world) is a myth from the standpoint of the nirguna, which is the Soul, the Self.

The Soul is the real Self and eternal identity. The nirguna (Soul) can remain with or without the Saguna (mind) whereas the Saguna (mind) is dependent on Nirguna (Soul) for its existence

Nirguna and Saguna are classified only in duality. In non-dual reality there is neither the nirguna nor the saguna, everything is one. Therefore, the nirguna and the Saguna are one, in essence, that Soul, which is present in the form of consciousness.

The Saguna is the mind because when the mind is present then all the attributes are present, and when the mind is absent then the attributes are absent.

Remember:~

In Advaita Vedanta: ~ “Brahman is without attributes and strictly impersonal. It can be best described as infinite Being, infinite Consciousness, and infinite Bliss. It is pure knowledge itself, similar to a source of infinite radiance. Since the Advaitins regard Brahman to be the Ultimate Truth, so, in comparison to Brahman, every other thing, including the material world, its distinctness, the individuality of the living creatures, and even Ishvara (the Supreme Lord) itself are all untrue. Brahman is the effulgent cause of everything that exists and can possibly exist. Since it is beyond human comprehension, it is without any attributes, for assigning attributes to it would be distorting the true nature of Brahman. Advaitins believe in the existence of both Saguna Brahman and Nirguna Brahman; however, they consider Nirguna Brahman to be the absolute supreme truth.

Chandogya Upanishad: ~ One who meditates upon and realizes the 'Self' discovers that everything in the cosmos-- energy and space, fire and water, name and form, birth and death, mind and will, word and deed, mantras and meditation--all come from the Self.

So, it clearly says the one who meditates upon the Self (consciousness) discovers that everything in the cosmos-- energy and space, fire and water, name and form, birth and death, mind and will, word and deed, mantras and meditation--all come from the Self. Therefore, there is a need to know the fact that, the true self is not physical, but the Soul to realize the fact that: the cosmos-- energy and space, fire and water, name and form, birth and death, mind and will, word and deed, mantras and meditation--all come from the Self, which is in the form of consciousness.

Atman is Brahman. Brahman is alone real; this waking is unreal, and the three states are non-different from Brahman.

Whatever is, is Brahman. Brahman itself is absolutely homogeneous. All difference and plurality are illusory." Brahman is not a person, as the Absolute is not this. But if one wants to call it God or ParamAtman, then fine. But it is not a person. Personifying it can make it difficult to understand the truth, which is beyond form, time, and space. : ~ Santthosh Kumaar