“Therefore, Sariputra, the Bodhisattva without mental impediments, without notions of attainment and non-attainment, abides in reliance upon Prajnaparamita. Without mental impediments, he is undisturbed. He has fearlessly transcended the false tendencies to crave for permanence, comfort, concept of self or delight. Thus Nirvana is attained.
The Heart Sutra