Dhammapada 23.2.323

23.2.323

‘‘Na hi etehi yānehi, gaccheyya agataṃ disaṃ;
Yathāttanā sudantena, danto dantena gacchatī’’ti.

323. For it is not on riding-animals such as these that one may go to that region to
which one has not yet gone;
Tamed must one go upon the tamed; namely, upon one’s own well-tamed self.