In Mah y na Buddhism, the attainment of final nirv na , with no remaining connection with the world of appearance. A bodhisattva postpones this attainment to help others ( pranidh na ), though in fact, since all is of the same nature, empty of self ( nyat ), he is in the condition of nirv na while helping still in the domain of appearance ( sa s ra ). Thus although the concept seems the equivalent of the Therav da nirupadhi e a-nirv na