The aim of the bodhisattva's practice in the "Bodhisattvabhūmi" is the wisdom ("prajñā") which realizes of the inexpressible Ultimate Reality ("tathata") or the 'thing-in-itself ("vastumatra"), which is essenceless and beyond the duality ("advaya") of existence ("bhāva") and non-existence ("abhāva"). The "Bodhisattvabhūmi" outlines several practices of bodhisattvas, including the six perfections ("pāramitā"), the thirty-seven factors of Awakening, and the four immeasurables. Two key practices which are unique to bodhisattvas in this text are the four investigations ("paryeṣaṇā") and the four correct cognitions ("yathābhūtaparijñāna").