योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-63, verse-29

काकतालीययोगेन कदाचित्साधुसंगमात् ।
अशुभो भावनाभ्यासो जीवस्य विनिवर्तते ॥ २९ ॥

kākatālīyayogena kadācitsādhusaṃgamāt ,
aśubho bhāvanābhyāso jīvasya vinivartate 29

29. kākatālīya-yogena kadācit sādhu-saṅgamāt
aśubhaḥ bhāvanā-abhyāsaḥ jīvasya vinivartate

29. kadācit kākatālīya-yogena sādhu-saṅgamāt
jīvasya aśubhaḥ bhāvanā-abhyāsaḥ vinivartate

29. Occasionally, through a serendipitous coincidence or by chance (kākatālīya-yoga), and by the association with virtuous individuals, the unwholesome repetitive pattern of mental impressions of the individual is completely eliminated.

Words meanings summery:

• काकतालीय-योगेन (kākatālīya-yogena) - by the coincidence of a crow and a palm tree, by an unexpected chance occurrence

• कदाचित् (kadācit) - sometimes, perchance, at some time

• साधु-सङ्गमात् (sādhu-saṅgamāt) - from the association with good people, from the company of virtuous individuals

• अशुभः (aśubhaḥ) - inauspicious, unwholesome, evil

• भावना-अभ्यासः (bhāvanā-abhyāsaḥ) - the habitual practice of thoughts/mental impressions, the repeated cultivation of mental states

• जीवस्य (jīvasya) - of the individual soul, of the living being

• विनिवर्तते (vinivartate) - ceases, is removed, disappears completely

Words meanings and morphology

काकतालीय-योगेन (kākatālīya-yogena) - by the coincidence of a crow and a palm tree, by an unexpected chance occurrence

(noun)

Instrumental, masculine, singular of kākatālīya-yoga

kākatālīya-yoga - the coincidence of a crow and a palm tree (when a crow lands on a palm tree, and a fruit falls simultaneously); a chance, unexpected occurrence

Compound type : tatpuruṣa (kākatālīya+yoga)

• kākatālīya – of or relating to a crow and a palm tree; happening by chance
  adjective (neuter)
  Derived from kāka (crow) and tāla (palm tree)
• yoga – union, conjunction, application, effort, spiritual discipline
  noun (masculine)
  From root yuj 'to join'
  Root: yuj (class 7)

कदाचित् (kadācit) - sometimes, perchance, at some time

(indeclinable)

साधु-सङ्गमात् (sādhu-saṅgamāt) - from the association with good people, from the company of virtuous individuals

(noun)

Ablative, masculine, singular of sādhu-saṅgama

sādhu-saṅgama - association with good people, company of the virtuous

Compound type : tatpuruṣa (sādhu+saṅgama)

• sādhu – good, virtuous, righteous, holy man
  adjective (masculine)
• saṅgama – union, meeting, association, confluence
  noun (masculine)
  From root gam with prefix sam
  Prefix: sam
  Root: gam (class 1)

अशुभः (aśubhaḥ) - inauspicious, unwholesome, evil

(adjective)

Nominative, masculine, singular of aśubha

aśubha - inauspicious, unwholesome, evil, bad, ugly

Negative particle 'a' + śubha

Compound type : nañ-tatpuruṣa (a+śubha)

• a – not, non-
  indeclinable
• śubha – auspicious, good, beautiful, propitious
  adjective (neuter)

भावना-अभ्यासः (bhāvanā-abhyāsaḥ) - the habitual practice of thoughts/mental impressions, the repeated cultivation of mental states

(noun)

Nominative, masculine, singular of bhāvanā-abhyāsa

bhāvanā-abhyāsa - habitual practice or cultivation of mental states, thoughts, or impressions

Compound type : tatpuruṣa (bhāvanā+abhyāsa)

• bhāvanā – conception, imagination, mental image, contemplation, cultivation
  noun (feminine)
  From root bhū (causative) + suffix ana
  Root: bhū (class 1)
• abhyāsa – practice, repetition, study, habit
  noun (masculine)
  From root as with prefix abhi
  Prefix: abhi
  Root: as (class 4)

जीवस्य (jīvasya) - of the individual soul, of the living being

(noun)

Genitive, masculine, singular of jīva

jīva - living being, individual soul, life, spirit

From root jīv 'to live'

Root: jīv (class 1)

विनिवर्तते (vinivartate) - ceases, is removed, disappears completely

(verb)

3rd person , singular, middle, present (laṭ) of vinivṛt

Prefixes: vi+ni

Root: vṛt (class 1)