महाभारतः mahābhārataḥ - book-12, chapter-136, verse-175

शत्रून्सम्यग्विजानन्ति दुर्बला ये बलीयसः ।
तेषां न चाल्यते बुद्धिरात्मार्थं कृतनिश्चया ॥१७५॥

175. śatrūnsamyagvijānanti durbalā ye balīyasaḥ ,
teṣāṁ na cālyate buddhirātmārthaṁ kṛtaniścayā.

175. śatrūn samyak vijānanti durbalāḥ ye balīyasaḥ
teṣām na cālyate buddhiḥ ātmārtham kṛtaniścayā

175. ye durbalāḥ balīyasaḥ śatrūn samyak vijānanti
teṣām ātmārtham kṛtaniścayā buddhiḥ na cālyate

175. Those weak individuals who correctly understand their stronger enemies have their intellect (buddhi) and firm resolve, made for their own self (ātman), unshaken.

Words meanings summery:

• शत्रून् (śatrūn) - enemies

• सम्यक् (samyak) - correctly, properly, thoroughly

• विजानन्ति (vijānanti) - they know, they understand

• दुर्बलाः (durbalāḥ) - weak, powerless (ones)

• ये (ye) - who, which (plural)

• बलीयसः (balīyasaḥ) - stronger (ones)

• तेषाम् (teṣām) - of them

• न (na) - not, no

• चाल्यते (cālyate) - is shaken, is moved

• बुद्धिः (buddhiḥ) - firm resolve or intellect (intellect, understanding, discernment, resolve)

• आत्मार्थम् (ātmārtham) - for the sake of oneself, for one's own interest

• कृतनिश्चया (kṛtaniścayā) - having made a firm resolve, whose resolve is firm

Words meanings and morphology

शत्रून् (śatrūn) - enemies

(noun)

Accusative, masculine, plural of śatru

śatru - enemy, foe

सम्यक् (samyak) - correctly, properly, thoroughly

(indeclinable)

from samyac 'going together, complete'

विजानन्ति (vijānanti) - they know, they understand

(verb)

3rd person , plural, active, present (laṭ) of vijñā

Present, 3rd Person Plural

Prefix: vi

Root: jñā (class 9)

दुर्बलाः (durbalāḥ) - weak, powerless (ones)

(adjective)

Nominative, masculine, plural of durbala

durbala - weak, feeble, powerless

Compound type : tatpuruṣa (dur+bala)

• dur – bad, difficult, ill-
  indeclinable
• bala – strength, power
  noun (neuter)

ये (ye) - who, which (plural)

(pronoun)

Nominative, masculine, plural of yad

yad - who, which, what

बलीयसः (balīyasaḥ) - stronger (ones)

(adjective)

Accusative, masculine, plural of balīyas

balīyas - stronger, more powerful

comparative degree of bala ('strength')

तेषाम् (teṣām) - of them

(pronoun)

Genitive, masculine, plural of tad

tad - that, those

न (na) - not, no

(indeclinable)

चाल्यते (cālyate) - is shaken, is moved

(verb)

3rd person , singular, passive, present (laṭ) of cāl

Present Passive, 3rd Person Singular

causative stem cāl, passive form

Root: cal (class 1)

बुद्धिः (buddhiḥ) - firm resolve or intellect (intellect, understanding, discernment, resolve)

(noun)

Nominative, feminine, singular of buddhi

buddhi - intellect, understanding, perception, resolve

from root budh 'to know'

Root: budh (class 1)

आत्मार्थम् (ātmārtham) - for the sake of oneself, for one's own interest

(noun)

Accusative, masculine, singular of ātmārtha

ātmārtha - one's own interest, for the sake of oneself

Compound type : tatpuruṣa (ātman+artha)

• ātman – self
  noun (masculine)
• artha – purpose, meaning, sake
  noun (masculine)

Note: Used adverbially as accusative of purpose

कृतनिश्चया (kṛtaniścayā) - having made a firm resolve, whose resolve is firm

(adjective)

Nominative, feminine, singular of kṛtaniścaya

kṛtaniścaya - having made a firm resolve, resolute

Compound type : bahuvrīhi (kṛta+niścaya)

• kṛta – made, done
  adjective (neuter)
  Past Passive Participle
  from root kṛ 'to do, make'
  Root: kṛ (class 8)
• niścaya – firm resolve, certainty, determination
  noun (masculine)
  from niś-ci 'to ascertain'
  Prefix: niś
  Root: ci (class 5)

Note: Agrees with 'buddhiḥ'