महाभारतः mahābhārataḥ - book-7, chapter-169, verse-39

दुर्ज्ञेयः परमो धर्मस्तथाधर्मः सुदुर्विदः ।
युध्यस्व कौरवैः सार्धं मा गाः पितृनिवेशनम् ॥३९॥

39. durjñeyaḥ paramo dharmastathādharmaḥ sudurvidaḥ ,
yudhyasva kauravaiḥ sārdhaṁ mā gāḥ pitṛniveśanam.

39. durjñeyaḥ paramaḥ dharmaḥ tathā adharmaḥ sudurvidaḥ
| yudhyasva kauravaiḥ sārdham mā gāḥ pitṛniveśanam

39. paramaḥ dharmaḥ durjñeyaḥ tathā adharmaḥ sudurvidaḥ
kauravaiḥ sārdham yudhyasva pitṛniveśanam mā gāḥ

39. The supreme natural law (dharma) is difficult to know, and unrighteousness (adharma) is exceedingly hard to discern. Therefore, fight alongside the Kauravas; do not go to the abode of your ancestors.

Words meanings summery:

• दुर्ज्ञेयः (durjñeyaḥ) - difficult to know, hard to understand

• परमः (paramaḥ) - supreme, highest, ultimate

• धर्मः (dharmaḥ) - natural law, righteousness, duty, virtue

• तथा (tathā) - thus, so, and, similarly

• अधर्मः (adharmaḥ) - unrighteousness, injustice

• सुदुर्विदः (sudurvidaḥ) - very difficult to know, exceedingly hard to discern

• युध्यस्व (yudhyasva) - fight! engage in battle! (imperative)

• कौरवैः (kauravaiḥ) - Refers to the descendants of Kuru, especially the sons of Dhritarashtra. (with the Kauravas)

• सार्धम् (sārdham) - together with, along with

• मा (mā) - do not, not

• गाः (gāḥ) - you go, you should go (prohibitive)

• पितृनिवेशनम् (pitṛniveśanam) - The Pitṛloka is the world of the deceased ancestors. (to the abode of ancestors, to the realm of the fathers)

Words meanings and morphology

दुर्ज्ञेयः (durjñeyaḥ) - difficult to know, hard to understand

(adjective)

Nominative, masculine, singular of durjñeya

durjñeya - difficult to know, hard to understand or discern

Gerundive (Potential Passive Participle)

From root jñā (to know) with upasarga dur.

Compound type : prādi-samāsa (dur+jñeya)

• dur – badly, difficultly, ill
  indeclinable
  prefix implying difficulty or badness
• jñeya – to be known, knowable, comprehensible
  adjective (masculine)
  Gerundive
  Derived from root jñā (to know)
  Root: jñā (class 9)

परमः (paramaḥ) - supreme, highest, ultimate

(adjective)

Nominative, masculine, singular of parama

parama - highest, supreme, ultimate, best

Superlative degree of 'para'.

Note: Qualifies `dharmaḥ`.

धर्मः (dharmaḥ) - natural law, righteousness, duty, virtue

(noun)

Nominative, masculine, singular of dharma

dharma - righteousness, natural law, constitution, duty, virtue, custom

from dhṛ (to uphold, sustain)

Root: dhṛ (class 1)

तथा (tathā) - thus, so, and, similarly

(indeclinable)

अधर्मः (adharmaḥ) - unrighteousness, injustice

(noun)

Nominative, masculine, singular of adharma

adharma - unrighteousness, injustice, wrong, non-constitution, vice

negation of dharma

Compound type : nañ-tatpuruṣa (a+dharma)

• a – not, non
  indeclinable
  negation prefix
• dharma – righteousness, natural law, constitution, duty, virtue
  noun (masculine)
  from dhṛ (to uphold, sustain)
  Root: dhṛ (class 1)

सुदुर्विदः (sudurvidaḥ) - very difficult to know, exceedingly hard to discern

(adjective)

Nominative, masculine, singular of sudurvida

sudurvida - very difficult to know, hard to discern, inscrutable

Compound of su (good, well, very) + dur (difficult) + vid (knowing).

Compound type : karmadhāraya (su+durvid)

• su – well, good, very, easily
  indeclinable
  prefix implying goodness or ease, or intensification
• durvid – difficult to know, hard to understand
  adjective (masculine)
  from dur + vid (knowing)
  Prefix: dur
  Root: vid (class 2)

युध्यस्व (yudhyasva) - fight! engage in battle! (imperative)

(verb)

2nd person , singular, middle, imperative (loṭ) of yudh

Imperative Middle

Second person singular, middle voice imperative of root yudh.

Root: yudh (class 4)

कौरवैः (kauravaiḥ) - Refers to the descendants of Kuru, especially the sons of Dhritarashtra. (with the Kauravas)

(proper noun)

Instrumental, masculine, plural of kaurava

kaurava - descendant of Kuru, belonging to the Kurus, a Kaurava

Derived from Kuru + suffix a.

Note: Used with `sārdham`.

सार्धम् (sārdham) - together with, along with

(indeclinable)

From sa (with) + ardha (half, side).

मा (mā) - do not, not

(indeclinable)

Prohibitive particle.

गाः (gāḥ) - you go, you should go (prohibitive)

(verb)

2nd person , singular, active, injunctive (aorist) (luṅ) of gam

Injunctive (Aorist)

Second person singular aorist injunctive of root gam (to go). Used with `mā` for prohibition.

Root: gam (class 1)

पितृनिवेशनम् (pitṛniveśanam) - The Pitṛloka is the world of the deceased ancestors. (to the abode of ancestors, to the realm of the fathers)

(noun)

Accusative, neuter, singular of pitṛniveśana

pitṛniveśana - abode of ancestors, realm of the fathers (Pitruloka), home of ancestors

Compound type : ṣaṣṭhī-tatpuruṣa (pitṛ+niveśana)

• pitṛ – father, ancestor
  noun (masculine)
• niveśana – abode, dwelling, home, entering
  noun (neuter)
  from ni-viś (to enter)
  Prefix: ni
  Root: viś (class 6)

Note: Object of 'go'.