योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-31, verse-15

आपूर्णैकार्णवप्रख्या काप्यन्तः पूर्णतोदिता ।
अन्तःशीतलता ज्ञप्तिर्ज्ञस्यापूर्वैव लक्ष्यते ॥ १५ ॥

āpūrṇaikārṇavaprakhyā kāpyantaḥ pūrṇatoditā ,
antaḥśītalatā jñaptirjñasyāpūrvaiva lakṣyate 15

15. āpūrṇaikārṇavaprakhyā kā api antaḥ pūrṇatā uditā
antaḥśītalatā jñaptiḥ jñasya apūrvā eva lakṣyate

15. kā api antaḥ āpūrṇaikārṇavaprakhyā pūrṇatā uditā
jñasya antaḥśītalatā jñaptiḥ apūrvā eva lakṣyate

15. A certain inner fullness, manifest within, is described as resembling a single, completely full ocean. This inner coolness, this understanding (jñapti), is truly perceived as unprecedented by the knower.

Words meanings summery:

• आपूर्णैकार्णवप्रख्या (āpūrṇaikārṇavaprakhyā) - resembling a single, completely full ocean

• का (kā) - some, a certain (feminine singular)

• अपि (api) - also, even, indeed, some (when combined with 'kim')

• अन्तः (antaḥ) - within, inside, internal

• पूर्णता (pūrṇatā) - fullness, completeness, perfection

• उदिता (uditā) - risen, appeared, manifested

• अन्तःशीतलता (antaḥśītalatā) - inner coolness, inner tranquility

• ज्ञप्तिः (jñaptiḥ) - knowledge, understanding, cognition, perception (jñapti)

• ज्ञस्य (jñasya) - of the knower, of the wise one

• अपूर्वा (apūrvā) - unprecedented, unique, new

• एव (eva) - indeed, certainly, only

• लक्ष्यते (lakṣyate) - is perceived, is observed, is seen

Words meanings and morphology

आपूर्णैकार्णवप्रख्या (āpūrṇaikārṇavaprakhyā) - resembling a single, completely full ocean

(adjective)

Nominative, feminine, singular of āpūrṇaikārṇavaprakhyā

āpūrṇaikārṇavaprakhyā - resembling a completely full, single ocean

Compound type : Bahuvrīhi (āpūrṇa+eka+arṇava+prakhyā)

• āpūrṇa – full, complete, filled
  adjective (masculine)
  Past Passive Participle
  From root pṛ-9, to fill, with prefix ā
  Prefix: ā
  Root: pṛ (class 9)
• eka – one, single, unique
  numeral (masculine)
• arṇava – ocean, sea
  noun (masculine)
• prakhyā – resemblance, likeness, appearance, fame
  noun (feminine)
  From root khyā-2, to tell, with prefix pra
  Prefix: pra
  Root: khyā (class 2)

का (kā) - some, a certain (feminine singular)

(pronoun)

Nominative, feminine, singular of kim

kim - what, which, who, some, any

अपि (api) - also, even, indeed, some (when combined with 'kim')

(indeclinable)

अन्तः (antaḥ) - within, inside, internal

(indeclinable)

पूर्णता (pūrṇatā) - fullness, completeness, perfection

(noun)

Nominative, feminine, singular of pūrṇatā

pūrṇatā - fullness, completeness, perfection, sufficiency

Derived from pūrṇa (full) + tā (suffix for abstract noun)

उदिता (uditā) - risen, appeared, manifested

(adjective)

Nominative, feminine, singular of udita

udita - risen, ascended, appeared, manifested, said, spoken

Past Passive Participle

From root i-2, to go, with prefix ud; or root vad-1, to speak, with prefix ud.

Prefix: ud

Root: i (class 2)

अन्तःशीतलता (antaḥśītalatā) - inner coolness, inner tranquility

(noun)

Nominative, feminine, singular of antaḥśītalatā

antaḥśītalatā - inner coolness, inner serenity or tranquility

Compound type : Tatpuruṣa (antar+śītalatā)

• antar – inner, internal, within
  indeclinable
• śītalatā – coolness, coldness, tranquility
  noun (feminine)
  Derived from śītala (cool) + tā (suffix for abstract noun)

ज्ञप्तिः (jñaptiḥ) - knowledge, understanding, cognition, perception (jñapti)

(noun)

Nominative, feminine, singular of jñapti

jñapti - knowledge, understanding, cognition, apprehension (jñapti)

From root jñā-9, to know, with suffix -ti

Root: jñā (class 9)

ज्ञस्य (jñasya) - of the knower, of the wise one

(noun)

Genitive, masculine, singular of jña

jña - knowing, wise, intelligent, a knower, a learned person

From root jñā-9, to know, with suffix -a

Root: jñā (class 9)

अपूर्वा (apūrvā) - unprecedented, unique, new

(adjective)

Nominative, feminine, singular of apūrva

apūrva - unprecedented, new, not before existing, novel

Compound type : Tatpuruṣa (a+pūrva)

• a – not, non-, un-
  indeclinable
• pūrva – before, previous, former, eastern
  adjective (masculine)

Note: Agrees with 'jñaptiḥ'.

एव (eva) - indeed, certainly, only

(indeclinable)

लक्ष्यते (lakṣyate) - is perceived, is observed, is seen

(verb)

3rd person , singular, passive, present indicative (laṭ) of lakṣ

Root: lakṣ (class 10)