योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-128, verse-39

मनस्यस्तं गते तस्य स्वयमात्मा प्रकाशते ।
प्रकाशे सर्वदुःखानां हानिः स्यात्सुखमात्मनि ॥ ३९ ॥

manasyastaṃ gate tasya svayamātmā prakāśate ,
prakāśe sarvaduḥkhānāṃ hāniḥ syātsukhamātmani 39

39. manasi astam gate tasya svayam ātmā prakāśate
prakāśe sarvaduḥkhānām hāniḥ syāt sukham ātmani

39. tasya manasi astam gate svayam ātmā prakāśate
prakāśe sarvaduḥkhānām hāniḥ syāt ātmani sukham

39. When the mind (manas) of that person has merged, the Self (ātman) itself becomes manifest. With this manifestation, there is a cessation of all sufferings, and true happiness (sukha) resides in the Self (ātman).

Words meanings summery:

• मनसि (manasi) - in the mind

• अस्तम् (astam) - having set, having disappeared/merged

• गते (gate) - having gone, having reached, merged

• तस्य (tasya) - of that (person)

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

• आत्मा (ātmā) - the Self, soul

• प्रकाशते (prakāśate) - shines forth, becomes manifest

• प्रकाशे (prakāśe) - in the shining, upon the manifestation

• सर्वदुःखानाम् (sarvaduḥkhānām) - of all sorrows/sufferings

• हानिः (hāniḥ) - loss, cessation, destruction

• स्यात् (syāt) - there would be, may be, should be

• सुखम् (sukham) - happiness, joy, comfort

• आत्मनि (ātmani) - in the Self

Words meanings and morphology

मनसि (manasi) - in the mind

(noun)

Locative, neuter, singular of manas

manas - mind, intellect, thought, heart, consciousness

Note: Part of locative absolute construction 'manasi astam gate'

अस्तम् (astam) - having set, having disappeared/merged

(noun)

Accusative, neuter, singular of asta

asta - setting (of sun), home, end, disappearance

गते (gate) - having gone, having reached, merged

(adjective)

Locative, neuter, singular of gata

gata - gone, arrived at, reached, merged

Past Passive Participle

Root: gam (class 1)

Note: Part of locative absolute construction 'manasi astam gate'

तस्य (tasya) - of that (person)

(pronoun)

Genitive, masculine, singular of tad

tad - that, he, she, it (demonstrative pronoun)

स्वयम् (svayam) - oneself, spontaneously, by itself

(indeclinable)

आत्मा (ātmā) - the Self, soul

(noun)

Nominative, masculine, singular of ātman

ātman - self, soul, spirit, essence, life

प्रकाशते (prakāśate) - shines forth, becomes manifest

(verb)

3rd person , singular, middle, present indicative (laṭ) of prakāś

Prefix: pra

Root: kāś (class 1)

प्रकाशे (prakāśe) - in the shining, upon the manifestation

(noun)

Locative, masculine, singular of prakāśa

prakāśa - light, manifestation, splendor, appearance

Prefix: pra

Root: kāś (class 1)

सर्वदुःखानाम् (sarvaduḥkhānām) - of all sorrows/sufferings

(noun)

Genitive, neuter, plural of sarvaduḥkha

sarvaduḥkha - all sorrow, all suffering

Compound type : karmadhāraya (sarva+duḥkha)

• sarva – all, every, whole
  adjective (masculine)
• duḥkha – sorrow, suffering, pain, misery
  noun (neuter)

हानिः (hāniḥ) - loss, cessation, destruction

(noun)

Nominative, feminine, singular of hāni

hāni - loss, abandonment, destruction, decrease, cessation

Root: hā (class 3)

स्यात् (syāt) - there would be, may be, should be

(verb)

3rd person , singular, active, optative (vidhiliṅ) of as

Root: as (class 2)

सुखम् (sukham) - happiness, joy, comfort

(noun)

Nominative, neuter, singular of sukha

sukha - happiness, pleasure, ease, joy

आत्मनि (ātmani) - in the Self

(noun)

Locative, masculine, singular of ātman

ātman - self, soul, spirit, essence, life