महाभारतः mahābhārataḥ - book-3, chapter-91, verse-4

श्वापदैरुपसृष्टानि दुर्गाणि विषमाणि च ।
अगम्यानि नरैरल्पैस्तीर्थानि मनुजेश्वर ॥४॥

4. śvāpadairupasṛṣṭāni durgāṇi viṣamāṇi ca ,
agamyāni narairalpaistīrthāni manujeśvara.

4. śvāpadaiḥ upasṛṣṭāni durgāṇi viṣamāṇi ca |
agamyāni naraiḥ alpaiḥ tīrthāni manujeśvara

4. O lord of men, there are difficult and perilous places, infested by wild animals, and pilgrimage (tīrtha) sites that are inaccessible to weak men.

Words meanings summery:

• श्वापदैः (śvāpadaiḥ) - by wild animals, by beasts of prey

• उपसृष्टानि (upasṛṣṭāni) - infested, beset, attacked

• दुर्गाणि (durgāṇi) - difficult places, fortresses

• विषमाणि (viṣamāṇi) - uneven, perilous, formidable

• च (ca) - and

• अगम्यानि (agamyāni) - inaccessible, unattainable

• नरैः (naraiḥ) - by men

• अल्पैः (alpaiḥ) - Referring to weak or incapable men. (by few, by insignificant, by weak)

• तीर्थानि (tīrthāni) - pilgrimage (tīrtha) sites, holy bathing places

• मनुजेश्वर (manujeśvara) - Addressed to Arjuna. (O lord of men, O king)

Words meanings and morphology

श्वापदैः (śvāpadaiḥ) - by wild animals, by beasts of prey

(noun)

Instrumental, masculine, plural of śvāpada

śvāpada - wild animal, beast of prey

Compound type : bahuvrīhi (śvan+pada)

• śvan – dog
  noun (masculine)
• pada – foot, step
  noun (neuter)

उपसृष्टानि (upasṛṣṭāni) - infested, beset, attacked

(adjective)

neuter, plural of upasṛṣṭa

upasṛṣṭa - infested, beset, afflicted, created, produced

Past Passive Participle

from root 'sṛj' (to emit, create) with prefix 'upa'

Prefix: upa

Root: sṛj (class 6)

दुर्गाणि (durgāṇi) - difficult places, fortresses

(noun)

neuter, plural of durga

durga - difficult to access, fortress, stronghold, difficult place

विषमाणि (viṣamāṇi) - uneven, perilous, formidable

(adjective)

neuter, plural of viṣama

viṣama - uneven, rough, difficult, dangerous, formidable

च (ca) - and

(indeclinable)

अगम्यानि (agamyāni) - inaccessible, unattainable

(adjective)

neuter, plural of agamya

agamya - inaccessible, unattainable, not to be approached

gerundive

Negative gerundive from root 'gam' (to go) with prefix 'a-'

Compound type : nañ-tatpuruṣa (a+gamya)

• a – not, non-, un-
  prefix
• gamya – to be gone, accessible, attainable
  adjective (neuter)
  gerundive
  from root 'gam' (to go)
  Root: gam (class 1)

नरैः (naraiḥ) - by men

(noun)

Instrumental, masculine, plural of nara

nara - man, human being, male

अल्पैः (alpaiḥ) - Referring to weak or incapable men. (by few, by insignificant, by weak)

(adjective)

Instrumental, masculine, plural of alpa

alpa - small, little, few, insignificant, weak

तीर्थानि (tīrthāni) - pilgrimage (tīrtha) sites, holy bathing places

(noun)

neuter, plural of tīrtha

tīrtha - ford, bathing place, sacred place, place of pilgrimage

मनुजेश्वर (manujeśvara) - Addressed to Arjuna. (O lord of men, O king)

(noun)

Vocative, masculine, singular of manujeśvara

manujeśvara - lord of men, king

Compound type : ṣaṣṭhī-tatpuruṣa (manuja+īśvara)

• manuja – man, human being
  noun (masculine)
  Born from Manu
• īśvara – lord, master, ruler
  noun (masculine)