[688] "And what, bhikkhu, is the space element (ākāsadhātu)? The space element may be internal, or it may be external. And what, bhikkhu, 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 one swallows what is eaten, drunk, chewed, and tasted, that wherein what is eaten, drunk, chewed, and tasted stands, and that whereby what is eaten, drunk, chewed, and tasted passes out from below; or whatever else internally, belonging to oneself, is space, spatial, and clung-to — this, bhikkhu, is called the internal space element. Now both the internal space element and the external space element are simply the space element (dhātu). That should be seen as it really is with right wisdom thus: 'This is not mine, this I am not, this is not my self.' Having seen it thus as it really is with right wisdom, one becomes disenchanted with the space element and detaches the mind (citta) from the space element."
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.