महाभारतः mahābhārataḥ - book-14, chapter-95, verse-18

यदि द्वादशवर्षाणि न वर्षिष्यति वासवः ।
व्यायामेनाहरिष्यामि यज्ञानन्यानतिव्रतान् ॥१८॥

18. yadi dvādaśavarṣāṇi na varṣiṣyati vāsavaḥ ,
vyāyāmenāhariṣyāmi yajñānanyānativratān.

18. yadi dvādaśavarṣāṇi na varṣiṣyati vāsavaḥ
vyāyāmena āhariṣyāmi yajñān anyān ativratān

18. yadi vāsavaḥ dvādaśavarṣāṇi na varṣiṣyati
vyāyāmena anyān ativratān yajñān āhariṣyāmi

18. If Indra does not cause rain for twelve years, I will perform other Vedic rituals (yajñas) that involve extraordinary vows through strenuous effort.

Words meanings summery:

• यदि (yadi) - if (if, when)

• द्वादशवर्षाणि (dvādaśavarṣāṇi) - twelve years

• न (na) - not (not, no)

• वर्षिष्यति (varṣiṣyati) - will cause rain (will rain, will cause rain)

• वासवः (vāsavaḥ) - Indra

• व्यायामेन (vyāyāmena) - through strenuous effort (by exertion, by effort, by exercise)

• आहरिष्यामि (āhariṣyāmi) - I will perform (I will bring, I will obtain, I will perform)

• यज्ञान् (yajñān) - Vedic rituals (yajñas) (Vedic rituals, devotions)

• अन्यान् (anyān) - other (other, different)

• अतिव्रतान् (ativratān) - involving extraordinary vows (going beyond vows, involving severe vows, exceedingly difficult vows)

Words meanings and morphology

यदि (yadi) - if (if, when)

(indeclinable)

द्वादशवर्षाणि (dvādaśavarṣāṇi) - twelve years

(noun)

Accusative, neuter, plural of dvādaśavarṣa

dvādaśavarṣa - twelve years

Compound type : dvigu (dvādaśa+varṣa)

• dvādaśa – twelve
  numeral
• varṣa – year, rain
  noun (neuter)

न (na) - not (not, no)

(indeclinable)

वर्षिष्यति (varṣiṣyati) - will cause rain (will rain, will cause rain)

(verb)

3rd person , singular, active, future (lṛṭ) of vṛṣ

root vṛṣ, future tense, 3rd person singular, active voice

Root: vṛṣ (class 1)

वासवः (vāsavaḥ) - Indra

(proper noun)

Nominative, masculine, singular of vāsava

vāsava - Indra (name of a deity)

व्यायामेन (vyāyāmena) - through strenuous effort (by exertion, by effort, by exercise)

(noun)

Instrumental, masculine, singular of vyāyāma

vyāyāma - exertion, effort, exercise, struggle

Prefixes: vi+ā

Root: yam (class 1)

आहरिष्यामि (āhariṣyāmi) - I will perform (I will bring, I will obtain, I will perform)

(verb)

1st person , singular, active, future (lṛṭ) of āhṛ

root hṛ with prefix ā, future tense, 1st person singular, active voice

Prefix: ā

Root: hṛ (class 1)

यज्ञान् (yajñān) - Vedic rituals (yajñas) (Vedic rituals, devotions)

(noun)

Accusative, masculine, plural of yajña

yajña - Vedic ritual, devotion, worship, offering

Root: yaj (class 1)

अन्यान् (anyān) - other (other, different)

(pronoun)

Accusative, masculine, plural of anya

anya - other, different, distinct

Note: Qualifies 'yajñān'.

अतिव्रतान् (ativratān) - involving extraordinary vows (going beyond vows, involving severe vows, exceedingly difficult vows)

(adjective)

Accusative, masculine, plural of ativrata

ativrata - observing severe vows, exceeding vows, extraordinary vow

Compound type : bahuvrihi (ati+vrata)

• ati – beyond, excessive, exceedingly
  indeclinable
• vrata – vow, sacred observance, religious duty
  noun (neuter)

Note: Qualifies 'yajñān'.