"As practice matures, we reach a stage of perfect equanimity, where all the factors of enlightenment ripen. At this time, there are no cravings or yearnings, even for the next breath or the next moment of experience. There is not the slightest impulse toward either becoming or not becoming. As the mind settles into this perfect balance of noncraving, the flow of consciousness conditioned by changing objects suddenly stops. The mind then opens to and alights upon nibbana, the unconditioned, the unborn."

The end of suffering - Tricycle: The Buddhist Review - Winter 2013