The Bhikṣuṇī Maṇimēkhalai

111 - The Philosophical Systems
non-eternal is not a product like ether (ākāśa), the capacity of being
made and of appearing as a product are features which are found in
the pakṣa as well as in the sapakṣa, but are not found in the vipakṣa.
These constitute the hētu or the reason for the character of being
non-eternal.
This is what is expounded almost in the same terms in the
Nyāyapravēśa; liṅgasyatrairūpyam, the middle term must possess
three characteristics, namely,
(1) the whole of the minor term, Pakṣa, must be connected with the
middle term as in the example.
Sound is non-eternal
Because it is a product like a pot,
But unlike ether (ākāśa).
In this, product, which is the middle term, contains the whole of
sound, which is the minor term.
(2) All things denoted by the middle term must be homogeneous with
things denoted by the major term, as in the example, all things
produced are non-eternal, as a pot.
(3) None of the things heterogeneous from the major term must be a
thing denoted by the middle term, as in the example, nothing that is
not non-eternal is a product as ether.
Valid
ṣṭānta is of two kinds, either homogeneous (sādharmya) or
heterogeneous (vaidkarmya). That which is homogeneous is where