योगवासिष्ठः yogavāsiṣṭhaḥ - book-5, chapter-71, verse-42

अन्तःकरणमेवातः कारणं भूतसंसृतौ ।
आत्मा सर्वातिगत्वात्तु कारणं सदकारणम् ॥ ४२ ॥

antaḥkaraṇamevātaḥ kāraṇaṃ bhūtasaṃsṛtau ,
ātmā sarvātigatvāttu kāraṇaṃ sadakāraṇam 42

42. antaḥkaraṇam eva ataḥ kāraṇam bhūtasaṃsṛtau
ātmā sarvātigatvāt tu kāraṇam sat akāraṇam

42. ataḥ antaḥkaraṇam eva bhūtasaṃsṛtau kāraṇam
tu ātmā sarvātigatvāt kāraṇam sat akāraṇam

42. Therefore, the internal organ (antaḥkaraṇa) is indeed the cause of worldly existence (saṃsāra) for beings. However, the self (ātman), because it transcends everything, is the cause but is itself uncaused.

Words meanings summery:

• अन्तःकरणम् (antaḥkaraṇam) - internal organ, mind, intellect

• एव (eva) - indeed, just, only, precisely

• अतः (ataḥ) - therefore, hence, from this

• कारणम् (kāraṇam) - cause, reason

• भूतसंसृतौ (bhūtasaṁsṛtau) - in the worldly existence of beings, in the cycle of transmigration of beings

• आत्मा (ātmā) - the self, soul, spirit

• सर्वातिगत्वात् (sarvātigatvāt) - due to transcending all, by reason of being beyond everything

• तु (tu) - but, on the other hand, indeed

• कारणम् (kāraṇam) - cause, reason

• सत् (sat) - existing, real, true

• अकारणम् (akāraṇam) - uncaused, without cause

Words meanings and morphology

अन्तःकरणम् (antaḥkaraṇam) - internal organ, mind, intellect

(noun)

Nominative, neuter, singular of antaḥkaraṇa

antaḥkaraṇa - internal organ (mind, intellect, ego, citta), inner sense

Compound type : tatpurusha (antar+karaṇa)

• antar – internal, inside, within
  indeclinable
• karaṇa – instrument, faculty, making, action
  noun (neuter)
  From root 'kṛ' (to do, make)
  Root: kṛ (class 8)

Note: Subject of the first clause.

एव (eva) - indeed, just, only, precisely

(indeclinable)

Note: An emphasizing particle.

अतः (ataḥ) - therefore, hence, from this

(indeclinable)

कारणम् (kāraṇam) - cause, reason

(noun)

Nominative, neuter, singular of kāraṇa

kāraṇa - cause, reason, instrument, motive

Root: kṛ (class 8)

भूतसंसृतौ (bhūtasaṁsṛtau) - in the worldly existence of beings, in the cycle of transmigration of beings

(noun)

Locative, feminine, singular of bhūtasaṃsṛti

bhūtasaṁsṛti - worldly existence/transmigration of beings

Compound type : tatpurusha (bhūta+saṃsṛti)

• bhūta – being, creature, element, past
  noun (neuter)
  Past Passive Participle
  From root 'bhū' (to be, become)
  Root: bhū (class 1)
• saṃsṛti – transmigration, worldly existence, cycle of rebirth (saṃsāra)
  noun (feminine)
  From root 'sṛ' with prefix 'sam'
  Prefix: sam
  Root: sṛ (class 1)

आत्मा (ātmā) - the self, soul, spirit

(noun)

Nominative, masculine, singular of ātman

ātman - self, spirit, soul, essential nature, breath

Note: Subject of the second clause.

सर्वातिगत्वात् (sarvātigatvāt) - due to transcending all, by reason of being beyond everything

(noun)

Ablative, neuter, singular of sarvātigatva

sarvātigatva - state of transcending all, being beyond everything

Compound type : tatpurusha (sarva+atiga+tva)

• sarva – all, every, whole
  adjective (masculine)
• atiga – going beyond, transcending, passing over
  adjective (masculine)
  From root 'gam' with prefix 'ati'
  Prefix: ati
  Root: gam (class 1)
• tva – suffix for abstract noun (-ness, -hood, state of being)
  suffix (neuter)

तु (tu) - but, on the other hand, indeed

(indeclinable)

Note: Connective particle indicating contrast.

कारणम् (kāraṇam) - cause, reason

(noun)

Nominative, neuter, singular of kāraṇa

kāraṇa - cause, reason, instrument, motive

Root: kṛ (class 8)

सत् (sat) - existing, real, true

(adjective)

Nominative, neuter, singular of sat

sat - existing, real, true, good, virtuous

Present Active Participle

From root 'as' (to be)

Root: as (class 2)

Note: Modifies 'kāraṇam'.

अकारणम् (akāraṇam) - uncaused, without cause

(adjective)

Nominative, neuter, singular of akāraṇa

akāraṇa - uncaused, without cause, not a cause

Compound type : tatpurusha (a+kāraṇa)

• a – not, un-
  indeclinable
  Negative prefix
• kāraṇa – cause, reason, instrument
  noun (neuter)
  Root: kṛ (class 8)

Note: Predicate nominative, modifying 'kāraṇam'.