Mahāprajñāpāramitā Sūtra

...the purity of that which is produced by the mind and the purity of the realm of phenomena up to the inconceivable realm 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 noble truth of suffering. If the purity of the noble truth of suffering 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 noble truth of suffering are non-dual, without two divisions, undifferentiated, and unbroken. The purity of that which is produced by the mind is the purity of the noble truths of origination, cessation, and the path. The purity of the noble truths of origination, cessation, and the path 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 noble truths of origination, cessation, and the path 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 four meditative concentrations. The purity of the four meditative concentrations 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 meditative concentrations 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 immeasurables and the four formless concentrations. The purity of the four immeasurables and the four formless concentrations 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...