[139] "And what, Rāhula, is the space element (ākāsadhātu)? The space element may be internal, or it may be external. And what, Rāhula, is the internal space element? Whatever internally, belonging to oneself, is space, spatial, and clung-to (upādinna), namely: the ear canal, the nasal cavity, the door of the mouth, that whereby what is eaten, drunk, chewed, and tasted is swallowed, that wherein what is eaten, drunk, chewed, and tasted collects, and that whereby what is eaten, drunk, chewed, and tasted passes out below; or whatever else internally, belonging to oneself, is space, spatial, hollow, of the nature of hollowness, open, of the nature of openness, untouched by flesh and blood, internal, clung-to — this, Rāhula, is called the internal space element. Now both the internal space element and the external space element are simply the space element. That should be seen as it really is with right wisdom thus: 'This is not mine, I am not this, this is not my self.' Having seen it thus as it really is with right wisdom, one becomes disenchanted with the space element and makes the mind dispassionate toward the space element."
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.