महाभारतः mahābhārataḥ - book-12, chapter-276, verse-37

निरारम्भोऽप्ययमिह यथालब्धोपजीवनः ।
पुण्यं पुण्येषु विमलं पापं पापेषु चाप्नुयात् ॥३७॥

37. nirārambho'pyayamiha yathālabdhopajīvanaḥ ,
puṇyaṁ puṇyeṣu vimalaṁ pāpaṁ pāpeṣu cāpnuyāt.

37. nirārambhaḥ api ayam iha yathālabdhopajīvanaḥ
puṇyam puṇyeṣu vimalam pāpam pāpeṣu ca āpnuyāt

37. ayam iha nirārambhaḥ api yathālabdhopajīvanaḥ
puṇyam puṇyeṣu vimalam pāpam pāpeṣu ca āpnuyāt

37. Even this person, who undertakes no (new) actions and lives upon whatever he obtains, will acquire pure merit through meritorious deeds and sin through sinful deeds (karma).

Words meanings summery:

• निरारम्भः (nirārambhaḥ) - one who does not initiate actions (without enterprise, without undertaking, inactive)

• अपि (api) - even (even, also, too)

• अयम् (ayam) - this person (this, this one)

• इह (iha) - here, in this context (here, in this world, in this matter)

• यथालब्धोपजीवनः (yathālabdhopajīvanaḥ) - living on whatever comes his way (living on what is obtained, subsisting on what is acquired without effort)

• पुण्यम् (puṇyam) - pure merit (merit, virtue, good deed, sacred)

• पुण्येषु (puṇyeṣu) - through meritorious deeds (in meritorious acts, among virtues)

• विमलम् (vimalam) - pure (pure, stainless, clear)

• पापम् (pāpam) - sin (sin, evil, bad deed)

• पापेषु (pāpeṣu) - through sinful deeds (in sinful acts, among sins)

• च (ca) - and (and, also)

• आप्नुयात् (āpnuyāt) - will acquire (one may obtain, he should obtain, he obtains)

Words meanings and morphology

निरारम्भः (nirārambhaḥ) - one who does not initiate actions (without enterprise, without undertaking, inactive)

(adjective)

Nominative, masculine, singular of nirārambha

nirārambha - without beginning, without enterprise, inactive

Compound type : bahuvrīhi (nis+ārambha)

• nis – without, free from
  indeclinable
• ārambha – beginning, undertaking, enterprise
  noun (masculine)
  from ā-rambh (to begin)
  Prefix: ā
  Root: rambh (class 1)

अपि (api) - even (even, also, too)

(indeclinable)

अयम् (ayam) - this person (this, this one)

(pronoun)

Nominative, masculine, singular of idam

idam - this, here

इह (iha) - here, in this context (here, in this world, in this matter)

(indeclinable)

यथालब्धोपजीवनः (yathālabdhopajīvanaḥ) - living on whatever comes his way (living on what is obtained, subsisting on what is acquired without effort)

(adjective)

Nominative, masculine, singular of yathālabdhopajīvana

yathālabdhopajīvana - living on what is obtained, subsisting on what is acquired

Compound type : bahuvrīhi (yathā+labdha+upajīvana)

• yathā – as, in which way, according to
  indeclinable
• labdha – obtained, acquired
  adjective (neuter)
  Past Passive Participle
  from √labh (to obtain)
  Root: labh (class 1)
• upajīvana – subsistence, livelihood
  noun (masculine)
  from upa-√jīv (to live upon)
  Prefix: upa
  Root: jīv (class 1)

पुण्यम् (puṇyam) - pure merit (merit, virtue, good deed, sacred)

(noun)

Accusative, neuter, singular of puṇya

puṇya - meritorious, virtuous, sacred, good deed, merit

Note: Acts as object of āpnuyāt.

पुण्येषु (puṇyeṣu) - through meritorious deeds (in meritorious acts, among virtues)

(noun)

Locative, neuter, plural of puṇya

puṇya - meritorious, virtuous, sacred, good deed, merit

Note: Implies the realm or context where the merit is acquired.

विमलम् (vimalam) - pure (pure, stainless, clear)

(adjective)

Accusative, neuter, singular of vimala

vimala - pure, clean, stainless, clear, untainted

Compound type : karmadhāraya (vi+mala)

• vi – without, free from, apart
  indeclinable
• mala – dirt, impurity, stain
  noun (masculine)

Note: Qualifies puṇyam.

पापम् (pāpam) - sin (sin, evil, bad deed)

(noun)

Accusative, neuter, singular of pāpa

pāpa - evil, wicked, bad, sin, crime

Note: Object of āpnuyāt.

पापेषु (pāpeṣu) - through sinful deeds (in sinful acts, among sins)

(noun)

Locative, neuter, plural of pāpa

pāpa - evil, wicked, bad, sin, crime

Note: Implies the realm or context where the sin is acquired.

च (ca) - and (and, also)

(indeclinable)

आप्नुयात् (āpnuyāt) - will acquire (one may obtain, he should obtain, he obtains)

(verb)

3rd person , singular, active, optative (vidhi-liṅ) of āp

Optative

from √āp (class 5), optative mood, parasmaipada, 3rd person singular

Root: āp (class 5)