his is the Tika , subcommentary to the Visuddhimagga which Nina Van Gorkom translated:
Tiika:
Ruupaani paricchindati, saya.m vaa tehi paricchijjati,
It delimits material phenomena or it is itself delimited by them,
ruupaana.m vaa paricchedamatta.m ruupaparicchedo,
or it is just the delimitation of material phenomena, the materiality that
is delimitation,
ta.m lakkha.na.m etissaati ruupaparicchedalakkha.naa.
that is its characteristic, thus, that of delimiting matter.
Aya.m hi aakaasadhaatu ta.m ta.m ruupakalaapa.m paricchindantii viya hoti.
This is the element of space that is as it were delimiting each of the
groups of material phenomena.
Tenaaha ³ruupapariyantappakaasanarasaa²ti.
Therefore he said, ³its function is to display the boundary of matter².
Atthato pana yasmaa ruupaana.m paricchedamatta.m hutvaa gayhati, tasmaa
vutta.m ³ruupamariyaadapaccupa.t.thaanaa²ti.
With regard to its meaning, since it is apprehended as having been just the
separation of material phenomena, he said that its manifestation is the
confines of matter.
Yasmi.m kalaape bhuutaana.m paricchedo, teheva
asamphu.t.thabhaavapaccupa.t.thaanaa.
In which group there is the delimitation of the great Elements, its
manifestation is the state of being untouched by these.
Vijjamaanepi hi kalaapantarabhuutaana.m kalaapantarabhuutehi
samphu.t.thabhaave ta.mta.mbhuutavivittataa ruupapariyanto aakaasoti yesa.m
so paricchedo, tehi so asamphu.t.thova.
If contact occurs between one group of the great elements with another
group, space is the separation of each of them by delimiting materiality and
thus it is the delimitation of those elements by which it is itself also
untouched.
A~n~nathaa paricchinnataa na siyaa tesa.m bhuutaana.m byaapibhaavaapattito.
Otherwise there would be no delimiting of these great elements, but there
would be pervasion among them.
Abyaapitaa hi asamphu.t.thataa.
The state of not pervading is the state of being untouched.
Tenaaha bhagavaa ³asamphu.t.tha.m catuuhi mahaabhuutehii²ti (dha. sa. 637,
Therefore, the Blessed one said, ³untouched by the great Elements.²
Ka.n.nacchiddamukhavivaraadivasena ca chiddavivarabhaavapaccupa.t.thaanaa
vaa.
And because of the cavity in the ear, or the door of the mouth, and so on,
its manifestation is the state of cavities and apertures.
Yesa.m ruupaana.m paricchedo, tattheva tesa.m paricchedabhaavena labbhatiiti
vutta.m ³paricchinnaruupapada.t.thaanaa²ti.
Of which material phenomena it is the delimitation, there it is applied, and
thus he said, ³its proximate cause is matter delimited.²
³Yaaya paricchinnesuu²ti-aadinaa aakaasadhaatuyaa ta.mta.mkalaapaana.m
kalaapantarehi asa"nkarakaara.nata.m dasseti.
With the words, ³And it is on account of it that one can say of
material things delimited (that this is above, below, around, that²)he
taught with regard to the element of space that it is the cause for each of
the groups that they are not blended with each other.
English:
It delimits material phenomena or it is itself delimited by them,
or it is just the delimitation of material phenomena, the materiality that
is delimitation,
that is its characteristic, thus, that of delimiting matter.
This is the element of space that is as it were delimiting each of the
groups of material phenomena.
Therefore he said, ³its function is to display the boundary of matter².
With regard to its meaning, since it is apprehended as having been just the
separation of material phenomena, he said that its manifestation is the
confines of matter.
In which group there is the delimitation of the great Elements, its
manifestation is the state of being untouched by these.
If contact occurs between one group of the great elements with another
group, space is the separation of each of them by delimiting materiality and
thus it is the delimitation of those elements by which it is itself also
untouched.
Otherwise there would be no delimiting of these great elements, but there
would be pervasion among them.
The state of not pervading is the state of being untouched.
Therefore, the Blessed one said, ³untouched by the great Elements.²
And because of the cavity in the ear, or the door of the mouth, and so on,
its manifestation is the state of cavities and apertures.
Of which material phenomena it is the delimitation, there it is applied,
and thus he said, ³its proximate cause is matter delimited.²
With the words, ³And it is on account of it that one can say of
material things delimited (that this is above, below, around, that²), he
taught with regard to the element of space that it is the cause for each of
the groups that they are not blended with each other.