महाभारतः mahābhārataḥ - book-12, chapter-240, verse-12

प्रदीपार्थं नरः कुर्यादिन्द्रियैर्बुद्धिसत्तमैः ।
निश्चरद्भिर्यथायोगमुदासीनैर्यदृच्छया ॥१२॥

12. pradīpārthaṁ naraḥ kuryādindriyairbuddhisattamaiḥ ,
niścaradbhiryathāyogamudāsīnairyadṛcchayā.

12. pradīpārtham naraḥ kuryāt indriyaiḥ buddhisattamaiḥ
niścaradbhiḥ yathāyogam udāsīnaiḥ yadṛcchayā

12. naraḥ pradīpārtham indriyaiḥ buddhisattamaiḥ
niścaradbhiḥ yathāyogam udāsīnaiḥ yadṛcchayā kuryāt

12. A person should make efforts for the purpose of enlightenment (pradīpa), using their senses—which are outstanding in intellect (buddhi), operating appropriately, remaining indifferent (udāsīna), and spontaneously.

Words meanings summery:

• प्रदीपार्थम् (pradīpārtham) - for the purpose of enlightenment or spiritual insight. (for the purpose of a lamp, for the sake of illumination)

• नरः (naraḥ) - a man, a person

• कुर्यात् (kuryāt) - should do, should make, should perform

• इन्द्रियैः (indriyaiḥ) - by the senses, with the sense organs

• बुद्धिसत्तमैः (buddhisattamaiḥ) - modifies 'senses' (indriyaiḥ), meaning senses guided by or imbued with excellent intellect. (by those excellent in intellect, by the best of intelligent ones)

• निश्चरद्भिः (niścaradbhiḥ) - modifies 'senses' (indriyaiḥ), referring to senses actively engaging with their objects. (by those going forth, moving out)

• यथायोगम् (yathāyogam) - appropriately, suitably, as is fit

• उदासीनैः (udāsīnaiḥ) - modifies 'senses' (indriyaiḥ), indicating that the senses should operate without attachment. (by those being indifferent, unconcerned)

• यदृच्छया (yadṛcchayā) - modifies 'senses' (indriyaiḥ), suggesting natural, unforced operation. (by spontaneity, by chance, arbitrarily)

Words meanings and morphology

प्रदीपार्थम् (pradīpārtham) - for the purpose of enlightenment or spiritual insight. (for the purpose of a lamp, for the sake of illumination)

(indeclinable)

Compound type : tatpuruṣa (pradīpa+artha)

• pradīpa – lamp, light, illumination
  noun (masculine)
• artha – purpose, aim, meaning, sake
  noun (masculine)

Note: Used adverbially here.

नरः (naraḥ) - a man, a person

(noun)

Nominative, masculine, singular of nara

nara - man, human being, person

कुर्यात् (kuryāt) - should do, should make, should perform

(verb)

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

Root: kṛ (class 8)

इन्द्रियैः (indriyaiḥ) - by the senses, with the sense organs

(noun)

Instrumental, neuter, plural of indriya

indriya - sense organ, faculty of sense

बुद्धिसत्तमैः (buddhisattamaiḥ) - modifies 'senses' (indriyaiḥ), meaning senses guided by or imbued with excellent intellect. (by those excellent in intellect, by the best of intelligent ones)

(adjective)

Instrumental, masculine/neuter, plural of buddhisattama

buddhisattama - most excellent in intellect, best of intelligent beings

Compound type : tatpuruṣa (buddhi+sattama)

• buddhi – intellect, understanding, discernment
  noun (feminine)
  Root: budh (class 1)
• sattama – best, most excellent, most virtuous
  adjective (masculine)
  Superlative suffix -tama

निश्चरद्भिः (niścaradbhiḥ) - modifies 'senses' (indriyaiḥ), referring to senses actively engaging with their objects. (by those going forth, moving out)

(participle)

Instrumental, masculine/neuter, plural of niś-carat

niś-car - to go forth, move out, issue from

Present Active Participle

Prefix: nis

Root: car (class 1)

यथायोगम् (yathāyogam) - appropriately, suitably, as is fit

(indeclinable)

Compound type : avyayībhāva (yathā+yoga)

• yathā – as, according to
  indeclinable
• yoga – fitness, suitability, union
  noun (masculine)
  Root: yuj (class 7)

उदासीनैः (udāsīnaiḥ) - modifies 'senses' (indriyaiḥ), indicating that the senses should operate without attachment. (by those being indifferent, unconcerned)

(participle)

Instrumental, masculine/neuter, plural of udāsīna

udāsīna - indifferent, unconcerned, neutral, passive

Present Active Participle (from ud-ās, to sit idly)

Prefix: ud

Root: ās (class 2)

यदृच्छया (yadṛcchayā) - modifies 'senses' (indriyaiḥ), suggesting natural, unforced operation. (by spontaneity, by chance, arbitrarily)

(noun)

Instrumental, feminine, singular of yadṛcchā

yadṛcchā - spontaneity, self-will, freedom, chance