महाभारतः mahābhārataḥ - book-12, chapter-56, verse-35

दुर्गेषु च महाराज षट्सु ये शास्त्रनिश्चिताः ।
सर्वेषु तेषु मन्यन्ते नरदुर्गं सुदुस्तरम् ॥३५॥

35. durgeṣu ca mahārāja ṣaṭsu ye śāstraniścitāḥ ,
sarveṣu teṣu manyante naradurgaṁ sudustaram.

35. durgeṣu ca mahārāja ṣaṭsu ye śāstraniścitāḥ
sarveṣu teṣu manyante naradurgam sudustaram

35. mahārāja ye ṣaṭsu durgeṣu ca śāstraniścitāḥ
sarveṣu teṣu naradurgam sudustaram manyante

35. O great king (mahārāja), among all those six types of forts (durga) that are prescribed in the scriptures, the fort of men (naradurga) is considered the most formidable.

Words meanings summery:

• दुर्गेषु (durgeṣu) - in strongholds, in forts

• च (ca) - and, also

• महाराज (mahārāja) - O great king, O emperor

• षट्सु (ṣaṭsu) - in the six

• ये (ye) - which, those who

• शास्त्रनिश्चिताः (śāstraniścitāḥ) - determined by scriptures, prescribed in scriptures

• सर्वेषु (sarveṣu) - in all

• तेषु (teṣu) - in those, among them

• मन्यन्ते (manyante) - they consider, they think, they believe

• नरदुर्गम् (naradurgam) - human fort, fort of men, manpower-fortress

• सुदुस्तरम् (sudustaram) - very difficult to overcome, very difficult to cross, impregnable

Words meanings and morphology

दुर्गेषु (durgeṣu) - in strongholds, in forts

(noun)

Locative, masculine, plural of durga

durga - fort, stronghold, fortress, difficult access

Note: Refers to the six types of forts.

च (ca) - and, also

(indeclinable)

Note: Used in conjunction with `ṣaṭsu` and `durgeṣu` to emphasize "among the six forts".

महाराज (mahārāja) - O great king, O emperor

(noun)

Vocative, masculine, singular of mahārāja

mahārāja - great king, emperor

Compound of `mahā` (great) and `rājan` (king).

Compound type : Karmadhāraya (mahā+rājan)

• mahā – great, large, mighty
  adjective
• rājan – king, sovereign
  noun (masculine)

षट्सु (ṣaṭsu) - in the six

(numeral)

Note: Qualifies `durgeṣu`.

ये (ye) - which, those who

(pronoun)

Nominative, masculine, plural of yad

yad - which, what, who

Note: Relative pronoun referring to `durgeṣu`.

शास्त्रनिश्चिताः (śāstraniścitāḥ) - determined by scriptures, prescribed in scriptures

(adjective)

Nominative, masculine, plural of śāstraniścita

śāstraniścita - determined by scriptures, ascertained by treatises, prescribed in treatises

Compound of `śāstra` (scripture) and `niścita` (determined).

Compound type : Tatpuruṣa (śāstra+niścita)

• śāstra – scripture, treatise, rule, science
  noun (neuter)
• niścita – determined, ascertained, fixed, certain
  adjective
  Past Passive Participle
  Derived from √ci (to collect, observe) with prefix niṣ-.
  Prefix: nis
  Root: ci (class 5)

Note: Qualifies `ye` (the forts).

सर्वेषु (sarveṣu) - in all

(pronoun)

Locative, masculine, plural of sarva

sarva - all, every, whole

Note: Qualifies `teṣu`.

तेषु (teṣu) - in those, among them

(pronoun)

Locative, masculine, plural of tad

tad - that, those, he, she, it, they

Note: Refers back to the `durgeṣu`.

मन्यन्ते (manyante) - they consider, they think, they believe

(verb)

3rd person , plural, middle, present (laṭ) of man

Root: man (class 4)

Note: The implied subject is "people" or "experts".

नरदुर्गम् (naradurgam) - human fort, fort of men, manpower-fortress

(noun)

Accusative, neuter, singular of naradurga

naradurga - fort of men, human fortress, fortress of manpower

Compound of `nara` (man) and `durga` (fort).

Compound type : Tatpuruṣa (nara+durga)

• nara – man, human being, person
  noun (masculine)
• durga – fort, stronghold, fortress
  noun (neuter)

Note: Object of `manyante`.

सुदुस्तरम् (sudustaram) - very difficult to overcome, very difficult to cross, impregnable

(adjective)

Accusative, neuter, singular of sudustara

sudustara - very difficult to cross, very difficult to overcome, impregnable

Compound of `su` (very) and `dustara` (difficult to cross).

Compound type : Pravādi Tatpuruṣa (su+dustara)

• su – good, well, very
  indeclinable
• dustara – difficult to cross, difficult to overcome
  adjective
  Gerundive
  Derived from √tṛ (to cross) with prefix dus- (difficult).
  Prefix: dus
  Root: tṛ (class 1)

Note: Qualifies `naradurgam`.