महाभारतः mahābhārataḥ - book-7, chapter-54, verse-25

यत्पार्थेन प्रतिज्ञातं तत्तथा न तदन्यथा ।
चिकीर्षितं हि ते भर्तुर्न भवेज्जातु निष्फलम् ॥२५॥

25. yatpārthena pratijñātaṁ tattathā na tadanyathā ,
cikīrṣitaṁ hi te bharturna bhavejjātu niṣphalam.

25. yat pārthān pratijñātam tat tathā na tat anyathā
cikīrṣitam hi te bhartuḥ na bhavet jātu niṣphalam

25. yat pārthān pratijñātam tat tathā na anyathā tat
hi te bhartuḥ cikīrṣitam jātu niṣphalam na bhavet

25. What was pledged by Arjuna (Pārtha) will indeed be so, and not otherwise. For that which your husband (Arjuna) desires will certainly never be in vain.

Words meanings summery:

• यत् (yat) - that which, what

• पार्थान् (pārthān) - by Arjuna, by the son of Pṛthā

• प्रतिज्ञातम् (pratijñātam) - promised, pledged, declared

• तत् (tat) - that

• तथा (tathā) - thus, so, in that manner

• न (na) - not, no

• तत् (tat) - that

• अन्यथा (anyathā) - otherwise, differently

• चिकीर्षितम् (cikīrṣitam) - desired to be done, intended

• हि (hi) - for, indeed, certainly

• ते (te) - your (referring to Subhadra) (your)

• भर्तुः (bhartuḥ) - of your husband (Arjuna) (of the husband)

• न (na) - not

• भवेत् (bhavet) - may it be, it would be, it should be

• जातु (jātu) - ever, at any time

• निष्फलम् (niṣphalam) - fruitless, in vain, useless

Words meanings and morphology

यत् (yat) - that which, what

(pronoun)

Nominative, neuter, singular of yad

yad - which, what, that

पार्थान् (pārthān) - by Arjuna, by the son of Pṛthā

(proper noun)

Instrumental, masculine, singular of pārtha

pārtha - son of Pṛthā, Arjuna

प्रतिज्ञातम् (pratijñātam) - promised, pledged, declared

(adjective)

Nominative, neuter, singular of pratijñāta

pratijñāta - promised, declared, known

Past Passive Participle

Derived from root jñā with prefix prati.

Prefix: prati

Root: jñā (class 9)

तत् (tat) - that

(pronoun)

Nominative, neuter, singular of tad

tad - that, it

तथा (tathā) - thus, so, in that manner

(indeclinable)

न (na) - not, no

(indeclinable)

तत् (tat) - that

(pronoun)

Nominative, neuter, singular of tad

tad - that, it

अन्यथा (anyathā) - otherwise, differently

(indeclinable)

चिकीर्षितम् (cikīrṣitam) - desired to be done, intended

(adjective)

Nominative, neuter, singular of cikīrṣita

cikīrṣita - desired to be done, intended

Past Passive Participle

Desiderative form of root kṛ (to do), then participle.

Root: kṛ (class 8)

हि (hi) - for, indeed, certainly

(indeclinable)

ते (te) - your (referring to Subhadra) (your)

(pronoun)

Genitive, feminine, singular of tvad

tvad - you

भर्तुः (bhartuḥ) - of your husband (Arjuna) (of the husband)

(noun)

Genitive, masculine, singular of bhartṛ

bhartṛ - husband, master, supporter

Root: bhṛ

न (na) - not

(indeclinable)

भवेत् (bhavet) - may it be, it would be, it should be

(verb)

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

Root: bhū (class 1)

जातु (jātu) - ever, at any time

(indeclinable)

निष्फलम् (niṣphalam) - fruitless, in vain, useless

(adjective)

Nominative, neuter, singular of niṣphala

niṣphala - fruitless, ineffective, vain

Compound type : bahuvrīhi (nis+phala)

• nis – out, forth, without, negation
  indeclinable
• phala – fruit, result, reward
  noun (neuter)