योगवासिष्ठः yogavāsiṣṭhaḥ - book-5, chapter-68, verse-38

नानापारयुगावर्तदुःखालोकनकर्कशम् ।
न लुनाति मनःखण्डं दुःखिगीर्वाणमण्डलम् ॥ ३८ ॥

nānāpārayugāvartaduḥkhālokanakarkaśam ,
na lunāti manaḥkhaṇḍaṃ duḥkhigīrvāṇamaṇḍalam 38

38. nānāpārayugāvartaduḥkhālokanakarkaśam na
lunāti manaḥkhaṇḍam duḥkhigīrvāṇamaṇḍalam

38. duḥkhigīrvāṇamaṇḍalam nānāpārayugāvartaduḥkhālokanakarkaśam
manaḥkhaṇḍam na lunāti

38. The assembly of sorrowful deities cannot sever the portion of the mind that has become hardened by witnessing the sorrows of countless cycles of (cosmic) ages (yugas).

Words meanings summery:

• नानापारयुगावर्तदुःखालोकनकर्कशम् (nānāpārayugāvartaduḥkhālokanakarkaśam) - harsh, rough, or hardened by witnessing the sorrows of the revolutions of various and vast eons

• न (na) - not, no

• लुनाति (lunāti) - cuts, severs, destroys

• मनःखण्डम् (manaḥkhaṇḍam) - a piece of the mind, a mental fragment

• दुःखिगीर्वाणमण्डलम् (duḥkhigīrvāṇamaṇḍalam) - the assembly of sorrowful deities

Words meanings and morphology

नानापारयुगावर्तदुःखालोकनकर्कशम् (nānāpārayugāvartaduḥkhālokanakarkaśam) - harsh, rough, or hardened by witnessing the sorrows of the revolutions of various and vast eons

(adjective)

Accusative, neuter, singular of nānāpārayugāvartaduḥkhālokanakarkaśa

nānāpārayugāvartaduḥkhālokanakarkaśa - harsh, rough, or hardened by witnessing the sorrows of the revolutions of various and vast eons

Compound type : tatpuruṣa (nānā+pāra+yuga+āvarta+duḥkha+ālokana+karkaśa)

• nānā – various, manifold
  indeclinable
• pāra – end, limit, boundary; full, complete
  noun (masculine)
• yuga – eon, age, epoch
  noun (neuter)
• āvarta – turn, revolution, cycle
  noun (masculine)
  Prefix: ā
  Root: vṛt (class 1)
• duḥkha – sorrow, suffering, pain
  noun (neuter)
• ālokana – seeing, viewing, witnessing
  noun (neuter)
  Prefix: ā
  Root: lok (class 10)
• karkaśa – harsh, rough, hard, severe
  adjective (masculine)

Note: Qualifies 'manaḥkhaṇḍam'.

न (na) - not, no

(indeclinable)

लुनाति (lunāti) - cuts, severs, destroys

(verb)

3rd person , singular, active, present (laṭ) of lū

Root: lū (class 9)

मनःखण्डम् (manaḥkhaṇḍam) - a piece of the mind, a mental fragment

(noun)

Accusative, neuter, singular of manaḥkhaṇḍa

manaḥkhaṇḍa - a piece of the mind, a mental fragment

Compound type : ṣaṣṭhī-tatpuruṣa (manas+khaṇḍa)

• manas – mind, intellect, thought
  noun (neuter)
• khaṇḍa – piece, fragment, part
  noun (neuter)

दुःखिगीर्वाणमण्डलम् (duḥkhigīrvāṇamaṇḍalam) - the assembly of sorrowful deities

(noun)

Nominative, neuter, singular of duḥkhigīrvāṇamaṇḍala

duḥkhigīrvāṇamaṇḍala - the assembly of sorrowful deities

Compound type : ṣaṣṭhī-tatpuruṣa (duḥkhin+girvāṇa+maṇḍala)

• duḥkhin – sorrowful, suffering, unhappy
  adjective (masculine)
• girvāṇa – deity, god
  noun (masculine)
• maṇḍala – circle, disk, assembly, multitude
  noun (neuter)