योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-12, verse-38

एकोऽभिलाष उत्पन्नो भोगेभ्यश्च निवार्यते ।
तत्क्षये यात्यविद्यायाश्चतुर्थांशः स्वयत्नतः ॥ ३८ ॥

eko'bhilāṣa utpanno bhogebhyaśca nivāryate ,
tatkṣaye yātyavidyāyāścaturthāṃśaḥ svayatnataḥ 38

38. ekaḥ abhilaṣaḥ utpannaḥ bhogebhyaḥ ca nivāryate
tat-kṣaye yāti avidyāyāḥ caturthāṃśaḥ svayatnataḥ

38. utpannaḥ ekaḥ abhilaṣaḥ bhogebhyaḥ ca nivāryate
tat-kṣaye avidyāyāḥ caturthāṃśaḥ svayatnataḥ yāti

38. When a single desire, having arisen, is restrained from sense objects (bhoga), then, upon its destruction, a fourth part of ignorance (avidyā) vanishes through one's own effort.

Words meanings summery:

• एकः (ekaḥ) - one, a single, unique

• अभिलषः (abhilaṣaḥ) - desire, longing, wish, inclination

• उत्पन्नः (utpannaḥ) - having arisen (arisen, produced, born, originated)

• भोगेभ्यः (bhogebhyaḥ) - from enjoyments (bhoga), from sense objects

• च (ca) - and, also, moreover

• निवार्यते (nivāryate) - is restrained, is averted, is kept away, is prevented

• तत्-क्षये (tat-kṣaye) - in its destruction, upon its cessation

• याति (yāti) - vanishes (goes, moves, vanishes, passes away)

• अविद्यायाः (avidyāyāḥ) - of ignorance (avidyā)

• चतुर्थांशः (caturthāṁśaḥ) - a fourth part, quarter

• स्वयत्नतः (svayatnataḥ) - by one's own effort, through self-exertion

Words meanings and morphology

एकः (ekaḥ) - one, a single, unique

(numeral)

अभिलषः (abhilaṣaḥ) - desire, longing, wish, inclination

(noun)

Nominative, masculine, singular of abhilaṣa

abhilaṣa - desire, longing, wish, inclination

Prefix: abhi

Root: laṣ (class 1)

उत्पन्नः (utpannaḥ) - having arisen (arisen, produced, born, originated)

(adjective)

Nominative, masculine, singular of utpanna

utpanna - arisen, produced, born, occurred, resulted

Past Passive Participle

Derived from root pad with prefix ut

Prefix: ut

Root: pad (class 4)

भोगेभ्यः (bhogebhyaḥ) - from enjoyments (bhoga), from sense objects

(noun)

Ablative, masculine, plural of bhoga

bhoga - enjoyment, pleasure, sense object, experience

Root: bhuj (class 7)

Note: Implies separation or restraint from.

च (ca) - and, also, moreover

(indeclinable)

निवार्यते (nivāryate) - is restrained, is averted, is kept away, is prevented

(verb)

3rd person , singular, passive, present (laṭ) of nivār

Passive Causative

Derived from root vṛ with prefix ni, in causative passive form

Prefix: ni

Root: vṛ (class 5)

तत्-क्षये (tat-kṣaye) - in its destruction, upon its cessation

(noun)

Locative, masculine, singular of tat-kṣaya

tat-kṣaya - its destruction, its cessation

Compound type : ṣaṣṭhī-tatpuruṣa (tad+kṣaya)

• tad – that, it, its
  pronoun (neuter)
• kṣaya – destruction, decay, cessation, loss
  noun (masculine)
  Root: kṣi (class 1)

याति (yāti) - vanishes (goes, moves, vanishes, passes away)

(verb)

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

Root: yā (class 2)

अविद्यायाः (avidyāyāḥ) - of ignorance (avidyā)

(noun)

Genitive, feminine, singular of avidyā

avidyā - ignorance, nescience, spiritual ignorance, illusion

a- (negation) + vidyā (knowledge)

चतुर्थांशः (caturthāṁśaḥ) - a fourth part, quarter

(noun)

Nominative, masculine, singular of caturthāṃśa

caturthāṁśa - a fourth part, quarter

Compound type : karmadhāraya (caturtha+aṃśa)

• caturtha – fourth
  numeral
• aṃśa – part, share, portion, ingredient
  noun (masculine)

स्वयत्नतः (svayatnataḥ) - by one's own effort, through self-exertion

(indeclinable)

Compound type : ṣaṣṭhī-tatpuruṣa (sva+yatna)

• sva – own, one's own, self
  pronoun
• yatna – effort, exertion, endeavor, painstaking care
  noun (masculine)
  Root: yat (class 1)

Note: Formed with the ablative suffix -tas from 'svayatna'.