Amara's Thesaurus 1.1.6

1.1.6

(1.0.5) prāyaśo rūpabhedena sāhacaryācca kutracit
(1.0.6) strīpuṃnapuṃsakaṃ jñeyaṃ tadviśeṣavidheḥ kvacit
(1.0.7) bhedākhyānāya na dvandvo naikaśeṣo na saṃkaraḥ
(1.0.8) kṛto 'tra bhinnaliṅgānāmanuktānāṃ kramādṛte
(1.0.9) triliṅgyāṃ triṣviti padaṃ mithune tu dvayoriti
(1.0.10) niṣiddhaliṅgaṃ śeṣārthaṃ tvantāthādi na pūrvabhāk

Mostly by variation of form, and in some places by co-occurrence,
feminine, masculine, and neuter are to be known, and somewhere by a specific prescription.
To state distinctions, no dvandva, no single-remainder elision, and no mixing
is made here of words of different genders, except in an unstated order.
When a word has three genders, the expression 'in three' [is used], but for a pair, 'in two'.
A prohibited gender applies to what follows; [particles] like 'tu', 'anta', 'atha', and so forth do not belong to the preceding.