योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-18, verse-40

सर्वसंकल्पकलना सत्येत्याबालमक्षतम् ।
स्वप्नादावनुभूतोन्तरर्थः केनापि लभ्यते ॥ ४० ॥

sarvasaṃkalpakalanā satyetyābālamakṣatam ,
svapnādāvanubhūtontararthaḥ kenāpi labhyate 40

40. sarvasaṅkalpakalanā satyā iti ābālam akṣatam svapna
ādau anubhūtaḥ antar arthaḥ kena api labhyate

40. sarvasaṅkalpakalanā ābālam akṣatam satyā iti svapna
ādau anubhūtaḥ antar arthaḥ kena api labhyate

40. From childhood, all mental constructions are believed to be true and remain unimpaired. However, the inner object experienced in a dream or similar state is not actually obtained by anyone.

Words meanings summery:

• सर्वसङ्कल्पकलना (sarvasaṅkalpakalanā) - all mental constructions/creations; the sum of all mental volitions/ideas

• सत्या (satyā) - true, real, existent

• इति (iti) - thus, so, in this manner, marking direct speech or quotation

• आबालम् (ābālam) - from childhood, up to a child

• अक्षतम् (akṣatam) - unimpaired, undisturbed, unbroken, unhurt

• स्वप्न (svapna) - dream

• आदौ (ādau) - in similar states, or 'etc.' (in the beginning, first, etc.)

• अनुभूतः (anubhūtaḥ) - experienced, perceived

• अन्तर् (antar) - inner, internal, within

• अर्थः (arthaḥ) - object (of experience) (object, meaning, purpose, thing, wealth)

• केन (kena) - by whom, by what

• अपि (api) - any (implying 'not any' in negative contexts) (also, even, perhaps, (with interrogative) any)

• लभ्यते (labhyate) - is obtained, is found, is received

Words meanings and morphology

सर्वसङ्कल्पकलना (sarvasaṅkalpakalanā) - all mental constructions/creations; the sum of all mental volitions/ideas

(noun)

Nominative, feminine, singular of sarvasaṅkalpakalanā

sarvasaṅkalpakalanā - the entirety of mental conceptions; the aggregate of all volitions

Compound type : tatpurusha (sarva+saṅkalpa+kalanā)

• sarva – all, every
  adjective
• saṅkalpa – resolve, intention, mental construction, volition
  noun (masculine)
  Derived from root kḷp with prefix sam-
  Prefix: sam
  Root: kḷp (class 1)
• kalanā – calculation, estimation, comprehension, creation
  noun (feminine)
  Derived from root kal-
  Root: kal (class 10)

सत्या (satyā) - true, real, existent

(adjective)

Nominative, feminine, singular of satya

satya - true, real, existent, truth

Note: Qualifies sarvasaṅkalpakalanā.

इति (iti) - thus, so, in this manner, marking direct speech or quotation

(indeclinable)

Note: Indicates the belief or assertion.

आबालम् (ābālam) - from childhood, up to a child

(indeclinable)

Avyayibhāva compound of ā (prefix) and bāla (child).

Compound type : avyayībhāva (ā+bāla)

• ā – up to, until, from all sides
  indeclinable
• bāla – child, young
  noun (masculine)

Note: Adverbial usage.

अक्षतम् (akṣatam) - unimpaired, undisturbed, unbroken, unhurt

(adjective)

Nominative, neuter, singular of akṣata

akṣata - unimpaired, unhurt, unbroken, complete, intact

Past Passive Participle

Derived from root kṣi (to hurt) with negation a-.

Compound type : nañ-tatpuruṣa (a+kṣata)

• a – not, un-
  indeclinable
• kṣata – hurt, injured, impaired
  adjective
  Past Passive Participle
  Derived from root kṣi
  Root: kṣi (class 5)

Note: Adverbial usage, describing the state.

स्वप्न (svapna) - dream

(noun)

masculine, singular of svapna

svapna - dream, sleep

Derived from root svap.

Root: svap (class 2)

Note: First part of a dvandva compound svapnādau.

आदौ (ādau) - in similar states, or 'etc.' (in the beginning, first, etc.)

(noun)

Locative, masculine, singular of ādi

ādi - beginning, commencement, first, etc.

Note: Part of the svapnādau compound, meaning 'in dreams and so forth'.

अनुभूतः (anubhūtaḥ) - experienced, perceived

(adjective)

Nominative, masculine, singular of anubhūta

anubhūta - experienced, perceived, felt

Past Passive Participle

Derived from root bhū- (to be, become) with prefix anu-.

Prefix: anu

Root: bhū (class 1)

Note: Qualifies arthaḥ.

अन्तर् (antar) - inner, internal, within

(indeclinable)

Note: First part of the compound antararthaḥ.

अर्थः (arthaḥ) - object (of experience) (object, meaning, purpose, thing, wealth)

(noun)

Nominative, masculine, singular of artha

artha - object, meaning, purpose, thing, wealth, affair

Note: Second part of the compound antararthaḥ.

केन (kena) - by whom, by what

(pronoun)

Instrumental, masculine, singular of kim

kim - what, which, who

अपि (api) - any (implying 'not any' in negative contexts) (also, even, perhaps, (with interrogative) any)

(indeclinable)

Note: In combination with kena, it forms kenāpi meaning 'by anyone' (implying 'by no one' with the passive verb labhyate).

लभ्यते (labhyate) - is obtained, is found, is received

(verb)

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

Present Tense, Passive Voice, 3rd Person Singular

Derived from root labh (class 1, ādmanepada).

Root: labh (class 1)