Osho Says: "When you die, everything in your body is ready to die -- except the mind. That's why in the East we say mind leaves the body and enters another womb, because it is not yet ready to die.
The rebirth is of the mind. Once you have attained the state of samadhi, no-mind, then there will be no rebirth. Then you will simply die. And with your dying, everything will be dissolved -- your body, your mind... only your witnessing soul will remain. That is beyond time and space.
Then you become one with existence; then you are no more separate from it. The separation comes from the mind. But there is no way to stop it forcibly -- don't be violent. Move lovingly, with a deep reverence -- and it will start happening of its own accord. You just watch. And don't be in a hurry."
Osho A Sudden clash of thunder