योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-77, verse-43

सद्वर्षयोर्धुरवरैर्द्युभूम्योरिव कान्तयोः ।
नित्यमेव वियुक्तत्वात्प्रियत्वाच्चेष्टितस्य च ॥ ४३ ॥

sadvarṣayordhuravarairdyubhūmyoriva kāntayoḥ ,
nityameva viyuktatvātpriyatvācceṣṭitasya ca 43

43. sadvarṣayoḥ dhuravaraiḥ dyubhūmyoḥ iva kāntayoḥ
nityam eva viyuktatvāt priyatvāt ceṣṭitasya ca

43. sarvam āhlādakam babhūva (eva)
sadvarṣayoḥ dhuravaraiḥ dyubhūmyoḥ
iva kāntayoḥ (ca) nityam
viyuktatvāt priyatvāt ceṣṭitasya ca

43. This was like (the delight of) excellent seasons, like that created by foremost leaders, like that of heaven and earth, and like that of two lovers. Indeed, this delight was always due to their freedom from attachment and the cherished nature of their activities.

Words meanings summery:

• सद्वर्षयोः (sadvarṣayoḥ) - of two good seasons/years, of two excellent years

• धुरवरैः (dhuravaraiḥ) - used here as an instrumental of comparison, meaning 'like that created by foremost leaders' or 'by virtue of excellent qualities' (by the excellent ones (who bear responsibilities), by the foremost/chief ones, by excellent virtues)

• द्युभूम्योः (dyubhūmyoḥ) - of heaven and earth

• इव (iva) - like, as, as it were

• कान्तयोः (kāntayoḥ) - of two lovers, of two beloved ones

• नित्यम् (nityam) - always, constantly, eternally

• एव (eva) - indeed, only, just

• वियुक्तत्वात् (viyuktatvāt) - interpreted as 'because of their freedom from attachment' or 'because of their distinctiveness as individuals within the union', to align with the 'delightful' context. (because of the state of being separated/disjoined/distinct)

• प्रियत्वात् (priyatvāt) - because of dearness, due to belovedness

• चेष्टितस्य (ceṣṭitasya) - of the activity, of the action

• च (ca) - and, also

Words meanings and morphology

सद्वर्षयोः (sadvarṣayoḥ) - of two good seasons/years, of two excellent years

(noun)

Genitive, neuter, dual of sadvarṣa

sadvarṣa - good year, good season

Compound type : karmadhāraya (sat+varṣa)

• sat – good, excellent, real, true
  adjective
  Present Active Participle
  from root as- 'to be'
  Root: as (class 2)
• varṣa – year, rain, rainy season
  noun (neuter)

धुरवरैः (dhuravaraiḥ) - used here as an instrumental of comparison, meaning 'like that created by foremost leaders' or 'by virtue of excellent qualities' (by the excellent ones (who bear responsibilities), by the foremost/chief ones, by excellent virtues)

(adjective)

Instrumental, masculine, plural of dhuravara

dhuravara - chief, principal, excellent in bearing a burden/responsibility

Compound type : tatpuruṣa or karmadhāraya (dhura+vara)

• dhura – yoke, burden, responsibility, chief, front
  noun (neuter)
• vara – best, excellent, choicest
  adjective (masculine)

द्युभूम्योः (dyubhūmyoḥ) - of heaven and earth

(noun)

Genitive, feminine, dual of dyubhūmi

dyubhūmi - heaven and earth

Compound type : dvandva (dyu+bhūmi)

• dyu – heaven, sky, day
  noun (feminine)
• bhūmi – earth, ground, land
  noun (feminine)

इव (iva) - like, as, as it were

(indeclinable)

कान्तयोः (kāntayoḥ) - of two lovers, of two beloved ones

(noun)

Genitive, masculine, dual of kānta

kānta - beloved, desired, beautiful, husband, lover

Past Passive Participle

from root kam- 'to desire'

Root: kam (class 1)

नित्यम् (nityam) - always, constantly, eternally

(indeclinable)

एव (eva) - indeed, only, just

(indeclinable)

वियुक्तत्वात् (viyuktatvāt) - interpreted as 'because of their freedom from attachment' or 'because of their distinctiveness as individuals within the union', to align with the 'delightful' context. (because of the state of being separated/disjoined/distinct)

(noun)

Ablative, neuter, singular of viyuktatva

viyuktatva - state of separation, distinctness, disunion

derived from viyukta (separated, disjoined) + tva (suffix for state/nature)

Prefix: vi

Root: yuj (class 7)

प्रियत्वात् (priyatvāt) - because of dearness, due to belovedness

(noun)

Ablative, neuter, singular of priyatva

priyatva - dearness, belovedness, affection

derived from priya (dear) + tva (suffix for state/nature)

चेष्टितस्य (ceṣṭitasya) - of the activity, of the action

(noun)

Genitive, neuter, singular of ceṣṭita

ceṣṭita - action, activity, gesture, movement, deed

Past Passive Participle (used as noun)

from root ceṣṭ 'to move, to act'

Root: ceṣṭ (class 1)

च (ca) - and, also

(indeclinable)