महाभारतः mahābhārataḥ - book-12, chapter-189, verse-21

आत्मबुद्धिं समास्थाय शान्तीभूतो निरामयः ।
अमृतं विरजःशुद्धमात्मानं प्रतिपद्यते ॥२१॥

21. ātmabuddhiṁ samāsthāya śāntībhūto nirāmayaḥ ,
amṛtaṁ virajaḥśuddhamātmānaṁ pratipadyate.

21. ātmabuddhim samāsthāya śāntībhūtaḥ nirāmayaḥ
amṛtam virajaśuddham ātmānam pratipadyate

21. ātmabuddhim samāsthāya śāntībhūtaḥ nirāmayaḥ
amṛtam virajaśuddham ātmānam pratipadyate

21. Having firmly established himself in the understanding of the self (ātman), he becomes peaceful and free from affliction. He attains the immortal, stainless, and pure self (ātman).

Words meanings summery:

• आत्मबुद्धिम् (ātmabuddhim) - the understanding/wisdom of the self (ātman)

• समास्थाय (samāsthāya) - having firmly established oneself, having resorted to

• शान्तीभूतः (śāntībhūtaḥ) - having become peaceful, tranquil

• निरामयः (nirāmayaḥ) - free from disease, healthy, hale

• अमृतम् (amṛtam) - Qualifies 'ātman'. (immortal, deathless)

• विरजशुद्धम् (virajaśuddham) - Qualifies 'ātman'. (stainless and pure, free from impurity and pure)

• आत्मानम् (ātmānam) - Object of 'pratipadyate'. (the self (ātman), soul)

• प्रतिपद्यते (pratipadyate) - attains, realizes, understands

Words meanings and morphology

आत्मबुद्धिम् (ātmabuddhim) - the understanding/wisdom of the self (ātman)

(noun)

Accusative, feminine, singular of ātmabuddhi

ātmabuddhi - wisdom concerning the self (ātman), intellect related to the ātman, self-understanding

Compound type : tatpuruṣa (ātman+buddhi)

• ātman – self, soul, spirit, individual consciousness
  noun (masculine)
  Root: an (class 2)
• buddhi – intellect, understanding, wisdom
  noun (feminine)
  Root: budh (class 1)

समास्थाय (samāsthāya) - having firmly established oneself, having resorted to

(indeclinable)

Absolutive / Gerund

From sam-ā-sthā (root sthā, upasargas sam, ā)

Prefixes: sam+ā

Root: sthā (class 1)

शान्तीभूतः (śāntībhūtaḥ) - having become peaceful, tranquil

(adjective)

Nominative, masculine, singular of śāntībhūta

śāntībhūta - having become peaceful, tranquil, calm

Past Passive Participle (bhūta) within a compound

Compound of śānti (peace) and bhūta (become). From śānti-bhū (to become peaceful).

Compound type : tatpuruṣa (śānti+bhūta)

• śānti – peace, tranquility, calm
  noun (feminine)
  Root: śam (class 4)
• bhūta – become, been, existing
  adjective (masculine)
  Past Passive Participle
  From root bhū (to be, become)
  Root: bhū (class 1)

निरामयः (nirāmayaḥ) - free from disease, healthy, hale

(adjective)

Nominative, masculine, singular of nirāmaya

nirāmaya - free from disease, healthy, sound, well

From nis-āmaya (āmaya = disease, nis = without)

Compound type : bahuvrīhi (nis+āmaya)

• nis – without, out of
  indeclinable
• āmaya – disease, sickness, affliction
  noun (masculine)
  From ā-am
  Prefix: ā
  Root: am (class 1)

अमृतम् (amṛtam) - Qualifies 'ātman'. (immortal, deathless)

(adjective)

Accusative, masculine, singular of amṛta

amṛta - immortal, deathless, nectar

Past Passive Participle (negative prefix)

From a- (not) + mṛta (dead), root mṛ (to die)

Compound type : nañ-tatpuruṣa (a+mṛta)

• a – not, un-
  indeclinable
  Negative prefix
• mṛta – dead, deceased
  adjective (masculine)
  Past Passive Participle
  From root mṛ (to die)
  Root: mṛ (class 6)

विरजशुद्धम् (virajaśuddham) - Qualifies 'ātman'. (stainless and pure, free from impurity and pure)

(adjective)

Accusative, masculine, singular of virajaśuddha

virajaśuddha - free from passion/impurity and pure, stainless and clean

Compound of viraja (stainless, pure, free from rajas) and śuddha (pure, clean).

Compound type : karmadhāraya (viraja+śuddha)

• viraja – stainless, pure, free from dust/impurity
  adjective (masculine)
  From vi-rajas (without rajas/impurity)
  Prefix: vi
• śuddha – pure, clean, clear
  adjective (masculine)
  Past Passive Participle
  From root śudh (to purify, be pure)
  Root: śudh (class 4)

आत्मानम् (ātmānam) - Object of 'pratipadyate'. (the self (ātman), soul)

(noun)

Accusative, masculine, singular of ātman

ātman - self, soul, spirit, individual consciousness

Root: an (class 2)

प्रतिपद्यते (pratipadyate) - attains, realizes, understands

(verb)

3rd person , singular, middle, present (laṭ) of pratipad

Present Middle Indicative

3rd person singular, present tense, middle voice. From prati-pad

Prefix: prati

Root: pad (class 4)