महाभारतः mahābhārataḥ - book-14, chapter-46, verse-47

निश्चिन्तमव्ययं नित्यं हृदिस्थमपि नित्यदा ।
सर्वभूतस्थमात्मानं ये पश्यन्ति न ते मृताः ॥४७॥

47. niścintamavyayaṁ nityaṁ hṛdisthamapi nityadā ,
sarvabhūtasthamātmānaṁ ye paśyanti na te mṛtāḥ.

47. niścintam avyayam nityam hṛdistham api nityadā
sarvabhūtastham ātmānam ye paśyanti na te mṛtāḥ

47. ye niścintam avyayam nityam hṛdistham api nityadā
sarvabhūtastham ātmānam paśyanti te na mṛtāḥ

47. Those who perceive the self (ātman) that is free from worry, imperishable, and eternal, dwelling constantly in the heart and in all beings—they are not subject to death.

Words meanings summery:

• निश्चिन्तम् (niścintam) - free from worry, tranquil, fearless

• अव्ययम् (avyayam) - imperishable, immutable, indestructible

• नित्यम् (nityam) - eternal, constant, perpetual

• हृदिस्थम् (hṛdistham) - dwelling in the heart, located in the heart

• अपि (api) - also, even, too

• नित्यदा (nityadā) - always, constantly, perpetually

• सर्वभूतस्थम् (sarvabhūtastham) - dwelling in all beings

• आत्मानम् (ātmānam) - the self, soul, spirit

• ये (ye) - who, those who

• पश्यन्ति (paśyanti) - they see, perceive, observe

• न (na) - not, no

• ते (te) - they

• मृताः (mṛtāḥ) - dead, deceased

Words meanings and morphology

निश्चिन्तम् (niścintam) - free from worry, tranquil, fearless

(adjective)

Accusative, neuter, singular of niścinta

niścinta - free from worry, tranquil, fearless

From nis + cintita (P.P.P. of cint)

Prefix: nis

Root: cit (class 10)

अव्ययम् (avyayam) - imperishable, immutable, indestructible

(adjective)

Accusative, neuter, singular of avyaya

avyaya - imperishable, immutable, indestructible

From a + vyaya (expenditure, decay)

Compound type : tatpurusha (a+vyaya)

• a – not, non-
  indeclinable
  Negative prefix
• vyaya – expenditure, loss, decay
  noun (masculine)
  Prefix: vi
  Root: vy-i

नित्यम् (nityam) - eternal, constant, perpetual

(adjective)

Accusative, neuter, singular of nitya

nitya - eternal, constant, perpetual, always

हृदिस्थम् (hṛdistham) - dwelling in the heart, located in the heart

(adjective)

Accusative, neuter, singular of hṛdistha

hṛdistha - dwelling in the heart

Compound type : tatpurusha (hṛd+stha)

• hṛd – heart
  noun (neuter)
• stha – standing, abiding, dwelling, situated
  adjective (masculine/neuter)
  From root sthā
  Root: sthā (class 1)

अपि (api) - also, even, too

(indeclinable)

नित्यदा (nityadā) - always, constantly, perpetually

(indeclinable)

Derived from nitya with the suffix -dā (meaning 'at all times')

सर्वभूतस्थम् (sarvabhūtastham) - dwelling in all beings

(adjective)

Accusative, neuter, singular of sarvabhūtastha

sarvabhūtastha - dwelling in all beings

Compound type : tatpurusha (sarva+bhūta+stha)

• sarva – all, every
  pronoun (masculine/feminine/neuter)
• bhūta – being, creature, element, past
  noun (neuter)
  Past Passive Participle
  From root bhū ('to be, to exist')
  Root: bhū (class 1)
• stha – standing, abiding, dwelling, situated
  adjective (masculine/neuter)
  From root sthā
  Root: sthā (class 1)

आत्मानम् (ātmānam) - the self, soul, spirit

(noun)

Accusative, masculine, singular of ātman

ātman - self, soul, spirit

ये (ye) - who, those who

(pronoun)

Nominative, masculine, plural of ya

ya - who, which, what (relative pronoun)

पश्यन्ति (paśyanti) - they see, perceive, observe

(verb)

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

Present stem

Irregular present stem of root dṛś

Root: dṛś (class 1)

न (na) - not, no

(indeclinable)

ते (te) - they

(pronoun)

Nominative, masculine, plural of tad

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

मृताः (mṛtāḥ) - dead, deceased

(adjective)

Nominative, masculine, plural of mṛta

mṛta - dead, deceased

Past Passive Participle

From root mṛ ('to die')

Root: mṛ (class 6)