Ken Wilber

 "it burns away certain lingering afflictions and sources of ignorance. Each time you fully enter this state, more of these afflictions are burned away. And after a certain number and type of these entrances—often four—you have burned away everything there is to burn, and so you can enter this state at will, and remain there permanently. You can enter nirvana permanently, and samsara ceases to arise in your case. The entire world of Form ceases to arise."