महाभारतः mahābhārataḥ - book-12, chapter-203, verse-20

न्यायतन्त्राण्यनेकानि तैस्तैरुक्तानि वादिभिः ।
हेत्वागमसदाचारैर्यदुक्तं तदुपास्यते ॥२०॥

20. nyāyatantrāṇyanekāni taistairuktāni vādibhiḥ ,
hetvāgamasadācārairyaduktaṁ tadupāsyate.

20. nyāyatantrāṇi anekāni taiḥ taiḥ uktāni vādibhiḥ
hetvāgamasadācāraiḥ yat uktam tat upāsyate

20. anekāni nyāyatantrāṇi taiḥ taiḥ vādibhiḥ uktāni
yat hetvāgamasadācāraiḥ uktam tat upāsyate

20. Many systems of logic (nyāya-tantra) have been expounded by various proponents. However, that which is taught through sound reasoning, sacred scriptures, and virtuous conduct (sadācāra) is truly to be followed.

Words meanings summery:

• न्यायतन्त्राणि (nyāyatantrāṇi) - systems of logic, philosophical treatises, legal codes

• अनेकानि (anekāni) - many, numerous, various

• तैः (taiḥ) - by them, by those

• तैः (taiḥ) - by various (referring to proponents) (by them, by those)

• उक्तानि (uktāni) - stated, expounded, said, told

• वादिभिः (vādibhiḥ) - by the speakers, by the debaters, by the proponents

• हेत्वागमसदाचारैः (hetvāgamasadācāraiḥ) - by reasoning, scriptures, and good conduct

• यत् (yat) - that which, whatever

• उक्तम् (uktam) - stated, expounded, said, taught

• तत् (tat) - that

• उपास्यते (upāsyate) - is to be followed, is to be worshipped, is to be practiced

Words meanings and morphology

न्यायतन्त्राणि (nyāyatantrāṇi) - systems of logic, philosophical treatises, legal codes

(noun)

Nominative, neuter, plural of nyāyatantra

nyāyatantra - system of logic, philosophical treatise, legal code, system of justice

Compound type : tatpuruṣa (nyāya+tantra)

• nyāya – justice, rule, method, logic
  noun (masculine)
• tantra – treatise, system, doctrine, loom, string
  noun (neuter)

अनेकानि (anekāni) - many, numerous, various

(adjective)

Nominative, neuter, plural of aneka

aneka - not one, many, numerous

Compound type : bahuvrīhi (a+eka)

• a – not, non-
  indeclinable
• eka – one, single, unique
  pronoun

तैः (taiḥ) - by them, by those

(pronoun)

Instrumental, masculine, plural of tad

tad - that, those

तैः (taiḥ) - by various (referring to proponents) (by them, by those)

(pronoun)

Instrumental, masculine, plural of tad

tad - that, those

Note: Used here repetitively for emphasis 'by those and those' (various)

उक्तानि (uktāni) - stated, expounded, said, told

(adjective)

Nominative, neuter, plural of ukta

ukta - said, spoken, told, stated

Past Passive Participle

From root vac, conjugated with kta suffix

Root: vac (class 2)

वादिभिः (vādibhiḥ) - by the speakers, by the debaters, by the proponents

(noun)

Instrumental, masculine, plural of vādin

vādin - speaking, speaker, arguer, proponent, plaintiff

Derived from root vad (to speak)

Root: vad (class 1)

हेत्वागमसदाचारैः (hetvāgamasadācāraiḥ) - by reasoning, scriptures, and good conduct

(noun)

Instrumental, masculine, plural of hetvāgamasadācāra

hetvāgamasadācāra - reasoning, scripture, and good conduct (a combination of these)

Compound type : dvandva (hetu+āgama+sadācāra)

• hetu – cause, reason, motive, argument
  noun (masculine)
• āgama – scripture, tradition, coming, arrival
  noun (masculine)
  Prefix: ā
  Root: gam (class 1)
• sadācāra – good conduct, virtuous practice
  noun (masculine)

यत् (yat) - that which, whatever

(pronoun)

Nominative, neuter, singular of yad

yad - which, what, that

उक्तम् (uktam) - stated, expounded, said, taught

(adjective)

Nominative, neuter, singular of ukta

ukta - said, spoken, told, stated

Past Passive Participle

From root vac, conjugated with kta suffix

Root: vac (class 2)

तत् (tat) - that

(pronoun)

Nominative, neuter, singular of tad

tad - that, those

उपास्यते (upāsyate) - is to be followed, is to be worshipped, is to be practiced

(verb)

3rd person , singular, passive, present (laṭ) of upās

Prefix: upa

Root: ās (class 2)