महाभारतः mahābhārataḥ - book-14, chapter-50, verse-23

ध्यानयोगादुपागम्य प्रसन्नमतयः सदा ।
सुखोपचयमव्यक्तं प्रविशन्त्यात्मवत्तया ॥२३॥

23. dhyānayogādupāgamya prasannamatayaḥ sadā ,
sukhopacayamavyaktaṁ praviśantyātmavattayā.

23. dhyānayogāt upāgamya prasannamatayaḥ sadā
sukhopacayam avyaktam praviśanti ātmavattayā

23. Always having attained serenity through meditative discipline (dhyāna-yoga), those with tranquil minds enter the unmanifest state of increasing happiness by virtue of their self-mastery (ātmavattayā).

Words meanings summery:

• ध्यानयोगात् (dhyānayogāt) - through meditative discipline (dhyāna-yoga) (from the yoga of meditation, through meditation practice)

• उपागम्य (upāgamya) - having attained (serenity) (having approached, having attained, having reached)

• प्रसन्नमतयः (prasannamatayaḥ) - with serene minds, tranquil intellects

• सदा (sadā) - always, ever, perpetually

• सुखोपचयम् (sukhopacayam) - unmanifest state of increasing happiness (accumulation of happiness, increasing happiness, growth of happiness)

• अव्यक्तम् (avyaktam) - unmanifest (state of increasing happiness) (unmanifest, unperceived, subtle)

• प्रविशन्ति (praviśanti) - they enter, they go into

• आत्मवत्तया (ātmavattayā) - by virtue of their self-mastery (ātmavattayā) (by self-possession, by being self-controlled, by possessing the self)

Words meanings and morphology

ध्यानयोगात् (dhyānayogāt) - through meditative discipline (dhyāna-yoga) (from the yoga of meditation, through meditation practice)

(noun)

Ablative, masculine, singular of dhyānayoga

dhyānayoga - yoga of meditation, discipline of contemplation

Compound type : tatpurusha (dhyāna+yoga)

• dhyāna – meditation, contemplation, thought
  noun (neuter)
  Root: dhyai (class 1)
• yoga – union, spiritual discipline, method, practice
  noun (masculine)
  Root: yuj (class 7)

उपागम्य (upāgamya) - having attained (serenity) (having approached, having attained, having reached)

(indeclinable)

Gerund/Absolutive

Derived from the root 'gam' (to go) with prefixes 'upa' and 'ā' and the gerund/absolutive suffix 'ya'.

Prefixes: upa+ā

Root: gam (class 1)

प्रसन्नमतयः (prasannamatayaḥ) - with serene minds, tranquil intellects

(adjective)

Nominative, masculine, plural of prasannamati

prasannamati - having a serene mind, tranquil intellect

Compound type : bahuvrihi (prasanna+mati)

• prasanna – clear, bright, serene, gracious, pleased
  adjective
  Past Passive Participle
  Derived from the root 'sad' (to sit, to settle) with prefix 'pra' and the past passive participle suffix 'na' (n-stem).
  Prefix: pra
  Root: sad (class 1)
• mati – mind, intellect, thought, opinion, intention
  noun (feminine)
  Root: man (class 4)

सदा (sadā) - always, ever, perpetually

(indeclinable)

सुखोपचयम् (sukhopacayam) - unmanifest state of increasing happiness (accumulation of happiness, increasing happiness, growth of happiness)

(noun)

Accusative, masculine, singular of sukhopacaya

sukhopacaya - accumulation of happiness, increase of well-being

Compound type : tatpurusha (sukha+upacaya)

• sukha – happiness, pleasure, ease, comfort
  noun (neuter)
• upacaya – increase, accumulation, growth, gain
  noun (masculine)
  Prefix: upa
  Root: ci (class 5)

अव्यक्तम् (avyaktam) - unmanifest (state of increasing happiness) (unmanifest, unperceived, subtle)

(adjective)

Accusative, masculine, singular of avyakta

avyakta - unmanifest, undiscerned, subtle, imperceptible

Compound type : nañ-tatpurusha (a+vyakta)

• a – not, un-
  indeclinable
• vyakta – manifest, evident, distinct, expressed
  adjective
  Past Passive Participle
  Derived from the root 'añj' (to anoint, manifest) with prefix 'vi' and the past passive participle suffix 'ta'.
  Prefix: vi
  Root: añj (class 7)

Note: Modifies 'sukhopacayam'.

प्रविशन्ति (praviśanti) - they enter, they go into

(verb)

3rd person , plural, active, present indicative (laṭ) of pravis

Prefix: pra

Root: viś (class 6)

आत्मवत्तया (ātmavattayā) - by virtue of their self-mastery (ātmavattayā) (by self-possession, by being self-controlled, by possessing the self)

(noun)

Instrumental, feminine, singular of ātmavattā

ātmavattā - self-possession, self-mastery, self-control, being mindful of the self

Abstract noun formed from 'ātman' (self) + possessive suffix 'vat' + abstract suffix 'tā'.