Chronicles of Narnia/Books/The Silver Chair/Chapter 2
Jill and Scrubb end up on a cliff in Aslan's country, and while trying to save Pole from falling off the cliff, Eustace falls off instead. Aslan saves him by using his breath to transport him to Narnia. Later, after Jill stops crying, Aslan gives her 5 tasks to follow, then he transportes her there by his breath also.