Samaññaphala Sutta

“As long, Sire, as a monk does not perceive the disappearance of the five hindrances in himself, he feels as if in debt, in sickness, in bonds, in slavery, on a desert journey. But when he perceives the disappearance of the five hindrances in himself, it is as if he were freed from debt, from sickness, from bonds, from slavery, from the perils of the desert.”

“It is just as if a man were to draw out a reed from its sheath. He might think: “This is the reed, this is the sheath, reed and sheath are different. Now the reed has been pulled from the sheath.” … In the same way a monk with mind concentrated directs his mind to the production of a mind-made body. He draws that body out of this body.”