You are trying to purify the mind, but you fail to realize the mind itself impure because it is mere an illusion. First, you realize ’what is this mind? You and your experience of the world together is the mind. When the mind disappears, then the Soul, the innermost Self’ shines. When you realize the’ mind’ and the soul are one in essence, then the mind merge in the Soul. The soul, which is present in the form of the consciousness is the cause of you and the world, but it itself is uncaused.
Avadhuta Gita:~ “The Atman cannot be purified through the practice of the six limbs of the yoga, or through the annihilation of the mind, or through the instruction of a teacher. The Atman is the Reality Itself and It is Purity Itself."
Lord Sri Krishna himself says that he can do nothing to make a man intelligent straight away. The adepts give Prasad, blessing, initiations, mantrams, etc. only to confer temporary peace of mind, to help one to get rid of worries, but not to confer Gnana. The capacity to receive it, must first be inborn in man by evolutionary degree.
Sage Sri, Goudpada says that: - The merciful Veda teaches karma and Upasana to people of lower and middling intellect while Jnana is taught to those of higher intellect.
Ish Upanishad: ~
Vidya and Avidya both are hindrances to Self-knowledge, but Vidya is even worse than Avidya. The word Vidya is used here in a special sense; here it means worshipping gods and goddesses. By worshipping gods and goddesses you will go after death to the world of gods and goddesses. But will that help you? The time you spend there is wasted, because if you were not there you could have spent that time moving forward towards Self-knowledge, which is your goal. In the world of gods and goddesses, you cannot do that, and thus you go deeper and deeper into darkness.
Avidya is Karma and, therefore, a hindrance. You perform Avidya - i.e., you perform Agnihotra and other sacrifices. This is a roundabout way of purifying the mind, and it is also groping in the dark. But it may not have as heavy a toll on your time and energy as the other.
Ishopanishad:~ "They are steeped in ignorance and sunk into the greatest depth of misery who worships the matter, instead of the All-Pervading God and those who worship things born of matter like trees, animals, man, idols etc. are sunk deep in misery."
The Religious believers constantly quarrelling with one another claiming that, their religion is superior to other religion. They haven't the intelligence to understand that in reality there is nothing exist other than the universal God, which is present in the form of the spirit. The spirit is the innermost self.
The ultimate truth is One and universal. All people are seeking the same Truth..... Everyone is going toward the ultimate Goal. They will all realize the ultimate truth or Brahman or God if they have sincerity and longing to realize it
Self-knowledge or Brahma Gnana or Atma Gnana makes one perfect to explain the truth, which is beyond form, time, and space.
Self-knowledge or Brahma Gnana or Atma Gnana cannot be attained by study of the scriptures and intellectual understanding or by bookish knowledge. Therefore, there is no use of studying the scriptures and other scriptures in order to acquire the non-dual wisdom. That is why Buddha rejected the scriptures, and even Sage Sri, Sankara indicated that, the ultimate truth lies beyond religion, the concept of god and scriptures.
Scriptures are being added to from time to time. This process will go on. There is the final authority among them? One contradicts the other: duality reigns supreme.
I quote Scriptural citation only after verification reality and proved the truth, to point out that the scriptures teach the same thing. If one quotes them before having demonstrated truth, then it is scholasticism.
There is only one Reality to be known, the same for all seekers, but the ways to it, are hidden by the religion. Self-discovery is the only way, towards non-dual Absolute without any religious doctrines, which will help the seekers to unfold the mystery of the illusion in which we all are searching the truth of our true existence.