योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-113, verse-31

अस्याः स्वसत्तामात्रेण कर्तृतैतासु वृत्तिषु ।
दीपस्यालोककार्याणां यथा तद्वन्न वस्तुतः ॥ ३१ ॥

asyāḥ svasattāmātreṇa kartṛtaitāsu vṛttiṣu ,
dīpasyālokakāryāṇāṃ yathā tadvanna vastutaḥ 31

31. asyāḥ sva-sattā-mātreṇa kartṛtā etāsu vṛttiṣu
dīpasya āloka-kāryāṇām yathā tadvat na vastutaḥ

31. yathā dīpasya āloka-kāryāṇām sva-sattā-mātreṇa kartṛtā,
tadvat etāsu vṛttiṣu asyāḥ kartṛtā na vastutaḥ.

31. Just as a lamp's agency in producing functions of light is merely due to its own existence, but not in reality, similarly, the agency of this (consciousness or the Self) in these operations (of the mind/senses) is merely by its own presence, but not truly so.

Words meanings summery:

• अस्याः (asyāḥ) - of this (consciousness or the Self) (of this)

• स्व-सत्ता-मात्रेण (sva-sattā-mātreṇa) - merely by its own existence, by its own presence

• कर्तृता (kartṛtā) - agency, doership, the state of being a doer

• एतासु (etāsu) - in these (operations) (in these)

• वृत्तिषु (vṛttiṣu) - in operations, in functions, in modifications, in activities

• दीपस्य (dīpasya) - of a lamp

• आलोक-कार्याणाम् (āloka-kāryāṇām) - of the functions/effects of light

• यथा (yathā) - just as, as

• तद्वत् (tadvat) - similarly, in that manner

• न (na) - not, no

• वस्तुतः (vastutaḥ) - in reality, essentially, truly

Words meanings and morphology

अस्याः (asyāḥ) - of this (consciousness or the Self) (of this)

(pronoun)

Genitive, feminine, singular of idam

idam - this, this one

स्व-सत्ता-मात्रेण (sva-sattā-mātreṇa) - merely by its own existence, by its own presence

(noun)

Instrumental, neuter, singular of sva-sattā-mātra

sva-sattā-mātra - mere existence of oneself

Compound type : Tatpuruṣa (sva+sattā+mātra)

• sva – one's own, self
  pronoun/adjective
• sattā – existence, being, reality
  noun (feminine)
  Root: as (class 2)
• mātra – mere, only, measure
  indeclinable (neuter)

कर्तृता (kartṛtā) - agency, doership, the state of being a doer

(noun)

Nominative, feminine, singular of kartṛtā

kartṛtā - agency, doership

Derived from 'kartṛ' (doer) with suffix '-tā' (state of being)

Root: kṛ (class 8)

एतासु (etāsu) - in these (operations) (in these)

(pronoun)

Locative, feminine, plural of etad

etad - this, these

वृत्तिषु (vṛttiṣu) - in operations, in functions, in modifications, in activities

(noun)

Locative, feminine, plural of vṛtti

vṛtti - activity, function, mode of being, modification

Root: vṛt (class 1)

दीपस्य (dīpasya) - of a lamp

(noun)

Genitive, masculine, singular of dīpa

dīpa - lamp, light

Root: dīp (class 4)

आलोक-कार्याणाम् (āloka-kāryāṇām) - of the functions/effects of light

(noun)

Genitive, neuter, plural of āloka-kārya

āloka-kārya - function of light, effect of light

Compound type : Tatpuruṣa (āloka+kārya)

• āloka – light, seeing, looking
  noun (masculine)
  Prefix: ā
  Root: lok (class 10)
• kārya – work, action, effect, function, what is to be done
  noun (neuter)
  Gerundive
  root 'kṛ' with suffix '-ya'
  Root: kṛ (class 8)

यथा (yathā) - just as, as

(indeclinable)

तद्वत् (tadvat) - similarly, in that manner

(indeclinable)

न (na) - not, no

(indeclinable)

वस्तुतः (vastutaḥ) - in reality, essentially, truly

(indeclinable)

Derived from 'vastu' (thing, reality) with suffix '-taḥ' (from, in respect of)