योगवासिष्ठः yogavāsiṣṭhaḥ - book-5, chapter-53, verse-52

रागद्वेषवतोर्नित्यमन्योन्यातिविरुद्धयोः ।
एतयोर्मूलकाषेण विनाशः परमं सुखम् ॥ ५२ ॥

rāgadveṣavatornityamanyonyātiviruddhayoḥ ,
etayormūlakāṣeṇa vināśaḥ paramaṃ sukham 52

52. rāgadveṣavatoḥ nityam anyonyātiviruddhayoh
etayoḥ mūlakāṣeṇa vināśaḥ paramam sukham

52. nityam anyonyātiviruddhayoh rāgadveṣavatoḥ
etayoḥ mūlakāṣeṇa vināśaḥ paramam sukham

52. The complete eradication of these two – attachment (rāga) and aversion (dveṣa) – which always possess someone and are utterly opposed to each other, leads to supreme happiness (sukham).

Words meanings summery:

• रागद्वेषवतोः (rāgadveṣavatoḥ) - of those possessing attachment and aversion

• नित्यम् (nityam) - always, eternally, constantly

• अन्योन्यातिविरुद्धयोह् (anyonyātiviruddhayoh) - of those exceedingly opposed to each other, mutually antagonistic

• एतयोः (etayoḥ) - of these two

• मूलकाषेण (mūlakāṣeṇa) - by the uprooting of the root, by complete eradication

• विनाशः (vināśaḥ) - destruction, annihilation, eradication

• परमम् (paramam) - supreme, highest, ultimate

• सुखम् (sukham) - happiness, joy, bliss

Words meanings and morphology

रागद्वेषवतोः (rāgadveṣavatoḥ) - of those possessing attachment and aversion

(adjective)

Genitive, masculine, dual of rāgadveṣavat

rāgadveṣavat - possessing attachment and aversion

derived from the compound 'rāgadveṣa' with the possessive suffix '-vat'

नित्यम् (nityam) - always, eternally, constantly

(indeclinable)

अन्योन्यातिविरुद्धयोह् (anyonyātiviruddhayoh) - of those exceedingly opposed to each other, mutually antagonistic

(adjective)

Genitive, masculine, dual of anyonyātiviruddha

anyonyātiviruddha - mutually excessively opposed

Compound type : tatpuruṣa (anyonyā+ativiruddha)

• anyonyā – mutual, reciprocal, each other
  pronominal adjective (masculine)
• ativiruddha – exceedingly opposed, highly contrary
  adjective (masculine)
  Past Passive Participle
  compound of prefix 'ati-' and P.P.P. 'viruddha' from root 'rudh'
  Prefixes: ati+vi
  Root: rudh (class 7)

एतयोः (etayoḥ) - of these two

(pronoun)

Genitive, masculine, dual of etad

etad - this, these

मूलकाषेण (mūlakāṣeṇa) - by the uprooting of the root, by complete eradication

(noun)

Instrumental, masculine, singular of mūlakāṣa

mūlakāṣa - uprooting of the root, radical extirpation

Compound type : ṣaṣṭhī-tatpuruṣa (mūla+kāṣa)

• mūla – root, origin, basis, foundation
  noun (neuter)
• kāṣa – rubbing, scratching, attrition, eradication
  noun (masculine)
  from root 'kaṣ' (to scratch, rub)
  Root: kaṣ (class 1)

विनाशः (vināśaḥ) - destruction, annihilation, eradication

(noun)

Nominative, masculine, singular of vināśa

vināśa - destruction, ruin, loss, disappearance

from 'vi-' + root 'naś' (to perish)

Prefix: vi

Root: naś (class 4)

परमम् (paramam) - supreme, highest, ultimate

(adjective)

Nominative, neuter, singular of parama

parama - supreme, highest, ultimate, excellent

सुखम् (sukham) - happiness, joy, bliss

(noun)

Nominative, neuter, singular of sukha

sukha - happiness, pleasure, joy, comfort, bliss