Krishna gives the highest, most direct instruction for achieving spiritual perfection. He commands: Fix and absorb your mind exclusively upon Me alone (mayy eva mana ādhatsva), and engage your entire intellect and reasoning power completely in Me (mayi buddhiṃ niveśaya). By doing this, you will reside and live perpetually within Me alone (nivasiṣyasi mayy eva), from this moment onward and eternally hereafter (ata ūrdhvaṃ). Of this, there is absolutely no doubt (na saṃśayaḥ).