महाभारतः mahābhārataḥ - book-12, chapter-287, verse-42

आस्तिक्यव्यवसायाभ्यामुपायाद्विस्मयाद्धिया ।
यमारभत्यनिन्द्यात्मा न सोऽर्थः परिसीदति ॥४२॥

42. āstikyavyavasāyābhyāmupāyādvismayāddhiyā ,
yamārabhatyanindyātmā na so'rthaḥ parisīdati.

42. āstikyavyavasāyābhyām upāyāt vismayāt dhiyā yam
ārabhati anindyātmā na saḥ arthaḥ parīsidati

42. anindyātmā āstikyavyavasāyābhyām upāyāt vismayāt
dhiyā yam arthaḥ ārabhati saḥ na parīsidati

42. Any endeavor (artha) that a person of irreproachable nature undertakes with conviction (āstikya) and diligence, through proper means, with attentiveness, and by intellect, that endeavor never fails.

Words meanings summery:

• आस्तिक्यव्यवसायाभ्याम् (āstikyavyavasāyābhyām) - by conviction and diligence (by conviction and effort, by belief and perseverance)

• उपायात् (upāyāt) - through proper means (by means, from means, by proper method)

• विस्मयात् (vismayāt) - with attentiveness (from wonder, from astonishment, from diligence, from attention)

• धिया (dhiyā) - by intellect (by intellect, by thought, by wisdom)

• यम् (yam) - that which (refers to `artha`) (whom, which)

• आरभति (ārabhati) - undertakes (undertakes, begins, starts, commences)

• अनिन्द्यात्मा (anindyātmā) - a person of irreproachable nature (blameless person, one of irreproachable nature)

• न (na) - not (not, no)

• सः (saḥ) - that (refers to `artha`) (that, he)

• अर्थः (arthaḥ) - endeavor, purpose (purpose, object, meaning, wealth, affair)

• परीसिदति (parīsidati) - fails (fails, perishes, sinks, comes to naught, declines)

Words meanings and morphology

आस्तिक्यव्यवसायाभ्याम् (āstikyavyavasāyābhyām) - by conviction and diligence (by conviction and effort, by belief and perseverance)

(noun)

Instrumental, dual of āstikyavyavasāya

āstikyavyavasāya - conviction and effort; belief and perseverance

Compound type : dvandva (āstikya+vyavasāya)

• āstikya – conviction, belief in God/Vedas, orthodoxy, faith
  noun (neuter)
  from asti (it is)
• vyavasāya – effort, perseverance, determination, business, undertaking
  noun (masculine)
  from vi-ava-sā (to undertake)
  Prefixes: vi+ava
  Root: sā (class 4)

Note: Acts as an instrumental cause.

उपायात् (upāyāt) - through proper means (by means, from means, by proper method)

(noun)

Ablative, masculine, singular of upāya

upāya - means, method, expedient, approach

from upa-i (to go near)

Prefix: upa

Root: i (class 2)

Note: Used here to denote cause or means.

विस्मयात् (vismayāt) - with attentiveness (from wonder, from astonishment, from diligence, from attention)

(noun)

Ablative, masculine, singular of vismaya

vismaya - wonder, astonishment, surprise, diligence, attention

from vi-smi (to wonder)

Prefix: vi

Root: smi (class 1)

Note: Used here to denote cause or means.

धिया (dhiyā) - by intellect (by intellect, by thought, by wisdom)

(noun)

Instrumental, feminine, singular of dhī

dhī - intellect, thought, understanding, wisdom, mind

Root: dhyai (class 1)

Note: Acts as an instrumental cause.

यम् (yam) - that which (refers to `artha`) (whom, which)

(pronoun)

Accusative, masculine, singular of ya

ya - who, which, what (relative pronoun)

Note: Object of `ārabhati`.

आरभति (ārabhati) - undertakes (undertakes, begins, starts, commences)

(verb)

3rd person , singular, active, present (laṭ) of ārabh

Prefix: ā

Root: rabh (class 1)

अनिन्द्यात्मा (anindyātmā) - a person of irreproachable nature (blameless person, one of irreproachable nature)

(noun)

Nominative, masculine, singular of anindyātman

anindyātman - one whose self (ātman) is not blameworthy; irreproachable person

Compound type : bahuvrīhi (anindya+ātman)

• anindya – not blameworthy, irreproachable, faultless
  adjective (masculine)
  Gerundive
  negative prefix a- + root nind (to blame) + ya (gerundive suffix)
  Prefix: a
  Root: nind (class 1)
• ātman – self, soul, spirit, essential nature
  noun (masculine)
  Root: at (class 1)

Note: Subject of `ārabhati`.

न (na) - not (not, no)

(indeclinable)

Note: Negates the verb.

सः (saḥ) - that (refers to `artha`) (that, he)

(pronoun)

Nominative, masculine, singular of tad

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

Note: Refers back to `artha`.

अर्थः (arthaḥ) - endeavor, purpose (purpose, object, meaning, wealth, affair)

(noun)

Nominative, masculine, singular of artha

artha - purpose, object, aim, meaning, wealth, affair, thing

Root: ṛ (class 1)

Note: Subject of `parīsidati`.

परीसिदति (parīsidati) - fails (fails, perishes, sinks, comes to naught, declines)

(verb)

3rd person , singular, active, present (laṭ) of parīsad

Prefix: pari

Root: sad (class 1)