योगवासिष्ठः yogavāsiṣṭhaḥ - book-5, chapter-67, verse-38

अकर्तरि मनस्यन्तरकर्तृत्वं स्फुटं भवेत् ।
शून्यचित्तो हि पुरुषः कुर्वन्नपि न चेतति ॥ ३८ ॥

akartari manasyantarakartṛtvaṃ sphuṭaṃ bhavet ,
śūnyacitto hi puruṣaḥ kurvannapi na cetati 38

38. akartari manasi antarakartṛtvam sphuṭam bhavet
śūnyacittaḥ hi puruṣaḥ kurvan api na cetati

38. manasi akartari antarakartṛtvam sphuṭam bhavet.
hi śūnyacittaḥ puruṣaḥ kurvan api na cetati

38. When the mind (manas) is not considered the doer, inner agency (kartṛtva) becomes clear. Indeed, a person (puruṣa) whose mind is vacant does not perceive, even while performing actions.

Words meanings summery:

• अकर्तरि (akartari) - in the non-doer, in what is not the doer

• मनसि (manasi) - in the mind, in the intellect

• अन्तरकर्तृत्वम् (antarakartṛtvam) - inner agency, intrinsic doership, true doership

• स्फुटम् (sphuṭam) - clear, evident, manifest, distinct

• भवेत् (bhavet) - should be, would be, might be, becomes

• शून्यचित्तः (śūnyacittaḥ) - one whose mind is void, vacant-minded, empty-minded

• हि (hi) - indeed, certainly, because, for

• पुरुषः (puruṣaḥ) - person, individual, human being (puruṣa)

• कुर्वन् (kurvan) - doing, acting, performing

• अपि (api) - even, also, too, even if

• न (na) - not, no

• चेतति (cetati) - perceives, is conscious, knows, attends

Words meanings and morphology

अकर्तरि (akartari) - in the non-doer, in what is not the doer

(adjective)

Locative, masculine, singular of akartṛ

akartṛ - non-doer, not an agent

Negative compound (nañ-tatpuruṣa) of 'kartṛ' (doer).

Compound type : nañ-tatpuruṣa (a+kartṛ)

• a – not, non, un-
  indeclinable
  Negative particle.
• kartṛ – doer, agent, maker
  noun (masculine)
  Agent noun (Kṛt Pratyaya)
  Derived from root kṛ (to do) with -tṛ (तृ) suffix.
  Root: kṛ (class 8)

Note: Qualifies 'manasi'.

मनसि (manasi) - in the mind, in the intellect

(noun)

Locative, neuter, singular of manas

manas - mind, intellect, thought, heart

Root: man (class 4)

अन्तरकर्तृत्वम् (antarakartṛtvam) - inner agency, intrinsic doership, true doership

(noun)

Nominative, neuter, singular of antarakartṛtva

antarakartṛtva - inner agency, inherent doership

Compound of 'antara' (inner) and 'kartṛtva' (agency).

Compound type : tatpuruṣa (antara+kartṛtva)

• antara – inner, internal, within, intermediate
  adjective
• kartṛtva – agency, doership, the state of being a doer
  noun (neuter)
  Derived from kartṛ (doer) with -tva (त्व) suffix.

Note: This is the subject of 'bhavet'.

स्फुटम् (sphuṭam) - clear, evident, manifest, distinct

(adjective)

Nominative, neuter, singular of sphuṭa

sphuṭa - clear, evident, manifest, distinct, expanded

Root: sphuṭ (class 6)

Note: Agrees with 'antarakartṛtvam'.

भवेत् (bhavet) - should be, would be, might be, becomes

(verb)

3rd person , singular, active, optative (vidhiliṅ) of bhū

Root: bhū (class 1)

शून्यचित्तः (śūnyacittaḥ) - one whose mind is void, vacant-minded, empty-minded

(adjective)

Nominative, masculine, singular of śūnyacitta

śūnyacitta - empty-minded, vacant-minded, whose mind is void

Compound of 'śūnya' (empty) and 'citta' (mind).

Compound type : bahuvrīhi (śūnya+citta)

• śūnya – empty, void, zero, non-existent
  adjective
• citta – mind, consciousness, thought
  noun (neuter)
  Root: cit (class 1)

Note: Qualifies 'puruṣaḥ'.

हि (hi) - indeed, certainly, because, for

(indeclinable)

पुरुषः (puruṣaḥ) - person, individual, human being (puruṣa)

(noun)

Nominative, masculine, singular of puruṣa

puruṣa - man, male, human being, person, the cosmic person (puruṣa)

Note: Subject of 'cetati'.

कुर्वन् (kurvan) - doing, acting, performing

(participle)

Nominative, masculine, singular of kurvat

kurvat - doing, acting, performing

Present Active Participle

Derived from root kṛ (to do) with śatṛ (शतृ) suffix.

Root: kṛ (class 8)

Note: Agrees with 'puruṣaḥ'.

अपि (api) - even, also, too, even if

(indeclinable)

न (na) - not, no

(indeclinable)

चेतति (cetati) - perceives, is conscious, knows, attends

(verb)

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

Root: cit (class 1)