Mahāprajñāpāramitā Sūtra

...eyes. The purity of the five eyes is the purity of that which is produced by the mind. Why? Because the purity of that which is produced by the mind and the purity of the five eyes are non-dual, without two divisions, undifferentiated, and unbroken.

The purity of that which is produced by the mind is the purity of the six supernormal powers. The purity of the six supernormal powers is the purity of that which is produced by the mind. Why? Because the purity of that which is produced by the mind and the purity of the six supernormal powers are non-dual, without two divisions, undifferentiated, and unbroken.

Subhuti, the purity of that which is produced by the mind is the purity of the ten powers of a Buddha. The purity of the ten powers of a Buddha is the purity of that which is produced by the mind. Why? Because the purity of that which is produced by the mind and the purity of the ten powers of a Buddha are non-dual, without two divisions, undifferentiated, and unbroken.

The purity of that which is produced by the mind is the purity of the four fearlessnesses, the four analytical knowledges, the great loving-kindness, the great compassion, the great joy, the great equanimity, and the eighteen exclusive qualities of a Buddha. The purity of the four fearlessnesses up to the eighteen exclusive qualities of a Buddha is the purity of that which is produced by the mind. Why? Because the purity of that which is produced by the mind and the purity of the four fearlessnesses up to the eighteen exclusive qualities of a Buddha are non-dual, without two divisions, undifferentiated, and unbroken.