योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-100, verse-12

असंकल्पनमात्रेण सम्यग्ज्ञानोदयात्मना ।
संकल्पः क्षीयते सिद्ध्यै स्वयमेवासदात्मकः ॥ १२ ॥

asaṃkalpanamātreṇa samyagjñānodayātmanā ,
saṃkalpaḥ kṣīyate siddhyai svayamevāsadātmakaḥ 12

12. asaṃkalpanamātreṇa samyagjñānodayātmanā
saṃkalpaḥ kṣīyate siddhyai svayam eva asadātmakaḥ

12. asaṃkalpanamātreṇa samyagjñānodayātmanā,
asadātmakaḥ saṃkalpaḥ svayam eva siddhyai kṣīyate.

12. Merely by the absence of mental ideation (saṃkalpa), through the emergence of right knowledge, ideation (saṃkalpa), which is by its very nature unreal (asat), is spontaneously destroyed for the sake of accomplishment.

Words meanings summery:

• असंकल्पनमात्रेण (asaṁkalpanamātreṇa) - merely by the absence of volition, only by not conceiving

• सम्यग्ज्ञानोदयात्मना (samyagjñānodayātmanā) - by the nature of the arising of right knowledge

• संकल्पः (saṁkalpaḥ) - ideation, volition, mental conception

• क्षीयते (kṣīyate) - is destroyed, wastes away, dissolves, perishes

• सिद्ध्यै (siddhyai) - for the sake of accomplishment, for perfection, for success

• स्वयम् (svayam) - by itself, spontaneously, personally

• एव (eva) - indeed, only, certainly

• असदात्मकः (asadātmakaḥ) - having the nature of non-existence, unreal in nature

Words meanings and morphology

असंकल्पनमात्रेण (asaṁkalpanamātreṇa) - merely by the absence of volition, only by not conceiving

(noun)

Instrumental, neuter, singular of asaṃkalpanamātra

asaṁkalpanamātra - merely the absence of volition/ideation

compound of 'a' (negative prefix) + 'saṃkalpana' + 'mātra'

Compound type : tatpuruṣa (asaṃkalpana+mātra)

• asaṃkalpana – absence of ideation, non-volition
  noun (neuter)
  'a' (negative prefix) + 'saṃkalpana' (action noun from root kḷp with saṃ)
  Prefix: sam
  Root: kḷp (class 10)
• mātra – mere, only, measure
  adjective (neuter)

सम्यग्ज्ञानोदयात्मना (samyagjñānodayātmanā) - by the nature of the arising of right knowledge

(noun)

Instrumental, masculine, singular of samyagjñānodayātman

samyagjñānodayātman - the nature of the rise of perfect knowledge

Compound type : tatpuruṣa (samyak+jñāna+udaya+ātman)

• samyak – right, correct, complete, perfect
  indeclinable
• jñāna – knowledge, wisdom
  noun (neuter)
  Root: jñā (class 9)
• udaya – rising, appearance, emergence
  noun (masculine)
  derived from root iṇ with prefix ud
  Prefix: ud
  Root: iṇ (class 2)
• ātman – self, soul, essence, nature
  noun (masculine)

संकल्पः (saṁkalpaḥ) - ideation, volition, mental conception

(noun)

Nominative, masculine, singular of saṃkalpa

saṁkalpa - ideation, volition, intention, mental resolve

derived from root kḷp with prefix saṃ

Prefix: sam

Root: kḷp (class 10)

क्षीयते (kṣīyate) - is destroyed, wastes away, dissolves, perishes

(verb)

3rd person , singular, passive, present (laṭ) of kṣī

Root: kṣi (class 5)

सिद्ध्यै (siddhyai) - for the sake of accomplishment, for perfection, for success

(noun)

Dative, feminine, singular of siddhi

siddhi - accomplishment, success, perfection, supernatural power

Root: sidh (class 4)

स्वयम् (svayam) - by itself, spontaneously, personally

(indeclinable)

एव (eva) - indeed, only, certainly

(indeclinable)

असदात्मकः (asadātmakaḥ) - having the nature of non-existence, unreal in nature

(adjective)

Nominative, masculine, singular of asadātmaka

asadātmaka - having the nature of non-being, unreal

Compound type : bahuvrīhi (asat+ātman)

• asat – non-existent, unreal, false
  adjective (neuter)
  Present Active Participle (with 'a' negative)
  Root: as (class 2)
• ātman – self, essence, nature
  noun (masculine)