योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-13, verse-13

गुरूपदेशस्वाभ्यासात्स क्षीणावरणोऽभवत् ।
महात्मा भावितान्तात्मा पूर्वापरविदां वरः ॥ १३ ॥

gurūpadeśasvābhyāsātsa kṣīṇāvaraṇo'bhavat ,
mahātmā bhāvitāntātmā pūrvāparavidāṃ varaḥ 13

13. gurūpadeśasvābhyāsāt saḥ kṣīṇāvaraṇaḥ abhavat
mahātmā bhāvitāntātmā pūrvāparavidām varaḥ

13. saḥ gurūpadeśasvābhyāsāt kṣīṇāvaraṇaḥ abhavat
saḥ mahātmā bhāvitāntātmā pūrvāparavidām varaḥ

13. Through the guidance of a guru (guru) and diligent self-practice, he became one whose veils of ignorance were dispelled. He was a great soul (mahātman), with a deeply contemplated inner self (ātman), and superior among those who comprehend both the past and the future.

Words meanings summery:

• गुरूपदेशस्वाभ्यासात् (gurūpadeśasvābhyāsāt) - by guru's instruction and self-practice

• सः (saḥ) - he, that

• क्षीणावरणः (kṣīṇāvaraṇaḥ) - whose coverings are diminished/dispelled

• अभवत् (abhavat) - became, was

• महात्मा (mahātmā) - a great soul (ātman) (a great soul, noble-minded)

• भावितान्तात्मा (bhāvitāntātmā) - whose inner self (ātman) was contemplated/realized

• पूर्वापरविदाम् (pūrvāparavidām) - of those who know past and future

• वरः (varaḥ) - best, excellent, choice

Words meanings and morphology

गुरूपदेशस्वाभ्यासात् (gurūpadeśasvābhyāsāt) - by guru's instruction and self-practice

(noun)

Ablative, masculine, singular of gurūpadeśasvābhyāsa

gurūpadeśasvābhyāsa - instruction of a guru (guru) and self-practice

Compound type : dvandva (guru+upadeśa+sva+abhyāsa)

• guru – teacher, spiritual preceptor (guru)
  noun (masculine)
• upadeśa – instruction, advice, teaching
  noun (masculine)
  Prefix: upa
• sva – self, own
  pronoun (masculine)
• abhyāsa – practice, repetition, study
  noun (masculine)
  Prefixes: abhi+ā

सः (saḥ) - he, that

(pronoun)

Nominative, masculine, singular of tad

tad - that, he, she, it

क्षीणावरणः (kṣīṇāvaraṇaḥ) - whose coverings are diminished/dispelled

(adjective)

Nominative, masculine, singular of kṣīṇāvaraṇa

kṣīṇāvaraṇa - whose coverings of ignorance are destroyed or dispelled

Compound type : bahuvrīhi (kṣīṇa+āvaraṇa)

• kṣīṇa – diminished, destroyed, wasted
  adjective (masculine)
  Past Passive Participle
  derived from root kṣi (to waste, diminish)
  Root: kṣi (class 5)
• āvaraṇa – covering, veil, obstruction (often metaphorical for ignorance)
  noun (neuter)
  Prefix: ā

अभवत् (abhavat) - became, was

(verb)

3rd person , singular, active, past imperfect (laṅ) of bhū

Imperfect

Root: bhū (class 1)

महात्मा (mahātmā) - a great soul (ātman) (a great soul, noble-minded)

(noun)

Nominative, masculine, singular of mahātman

mahātman - great soul, magnanimous, noble-minded

Compound type : karmadhāraya (mahat+ātman)

• mahat – great, large, eminent
  adjective (masculine)
• ātman – self, soul, spirit, individual self (ātman)
  noun (masculine)

भावितान्तात्मा (bhāvitāntātmā) - whose inner self (ātman) was contemplated/realized

(adjective)

Nominative, masculine, singular of bhāvitāntātman

bhāvitāntātman - whose inner self (ātman) has been contemplated or realized

Compound type : bahuvrīhi (bhāvita+anta+ātman)

• bhāvita – contemplated, realized, formed, produced
  adjective (masculine)
  Past Passive Participle
  derived from the causative of root bhū (to be)
  Root: bhū (class 1)
• anta – inner, interior, end, limit
  adjective (masculine)
• ātman – self, soul, spirit, individual self (ātman)
  noun (masculine)

पूर्वापरविदाम् (pūrvāparavidām) - of those who know past and future

(noun)

Genitive, masculine, plural of pūrvāparavid

pūrvāparavid - one who knows past and future

Compound type : upapada-tatpuruṣa (pūrva+apara+vid)

• pūrva – past, former, prior
  adjective (masculine)
• apara – latter, future, other
  adjective (masculine)
• vid – knowing, knower, wise
  adjective (masculine)
  derived from root vid (to know)
  Root: vid (class 2)

वरः (varaḥ) - best, excellent, choice

(adjective)

Nominative, masculine, singular of vara

vara - best, excellent, superior, boon, suitor