योगवासिष्ठः yogavāsiṣṭhaḥ - book-4, chapter-29, verse-4

वर्षाणि दिवसान्मासान्दशाष्टौ सप्त पञ्च च ।
वर्षाणि पेतुर्वृक्षाग्निहेत्येकाशनिभूभृताम् ॥ ४ ॥

varṣāṇi divasānmāsāndaśāṣṭau sapta pañca ca ,
varṣāṇi peturvṛkṣāgnihetyekāśanibhūbhṛtām 4

4. varṣāṇi divasān māsān daśa aṣṭau sapta pañca ca
varṣāṇi petuḥ vṛkṣa-agni-heti-ekāśani-bhūbhṛtām

4. daśa aṣṭau sapta pañca ca varṣāṇi divasān māsān
vṛkṣa-agni-heti-ekāśani-bhūbhṛtām varṣāṇi petuḥ

4. For periods of ten, eight, seven, and five years, days, and months respectively, showers of trees, fire, weapons, singular thunderbolts, and even mountains fell.

Words meanings summery:

• वर्षाणि (varṣāṇi) - years (duration) (years)

• दिवसान् (divasān) - days (duration) (days)

• मासान् (māsān) - months (duration) (months)

• दश (daśa) - ten

• अष्टौ (aṣṭau) - eight

• सप्त (sapta) - seven

• पञ्च (pañca) - five

• च (ca) - and (and, also)

• वर्षाणि (varṣāṇi) - showers (rains, showers)

• पेतुः (petuḥ) - fell (they fell)

• वृक्ष-अग्नि-हेति-एकाशनि-भूभृताम् (vṛkṣa-agni-heti-ekāśani-bhūbhṛtām) - of trees, fire, weapons, singular thunderbolts, and mountains (of trees, fire, weapons, single thunderbolts, and mountains/kings)

Words meanings and morphology

वर्षाणि (varṣāṇi) - years (duration) (years)

(noun)

Accusative, neuter, plural of varṣa

varṣa - year, rain, monsoon, country

Note: Denotes duration.

दिवसान् (divasān) - days (duration) (days)

(noun)

Accusative, masculine, plural of divasa

divasa - day

Note: Denotes duration.

मासान् (māsān) - months (duration) (months)

(noun)

Accusative, masculine, plural of māsa

māsa - month, moon

Note: Denotes duration.

दश (daśa) - ten

(numeral)

Note: Modifies the duration nouns.

अष्टौ (aṣṭau) - eight

(numeral)

Note: Modifies the duration nouns.

सप्त (sapta) - seven

(numeral)

Note: Modifies the duration nouns.

पञ्च (pañca) - five

(numeral)

Note: Modifies the duration nouns.

च (ca) - and (and, also)

(indeclinable)

Note: Connects the numbers.

वर्षाणि (varṣāṇi) - showers (rains, showers)

(noun)

Nominative, neuter, plural of varṣa

varṣa - year, rain, monsoon, country

Note: Subject of 'petuḥ'.

पेतुः (petuḥ) - fell (they fell)

(verb)

3rd person , plural, active, perfect (lit) of pat

Root: pat (class 1)

Note: Refers to 'varṣāṇi' (showers).

वृक्ष-अग्नि-हेति-एकाशनि-भूभृताम् (vṛkṣa-agni-heti-ekāśani-bhūbhṛtām) - of trees, fire, weapons, singular thunderbolts, and mountains (of trees, fire, weapons, single thunderbolts, and mountains/kings)

(noun)

Genitive, masculine, plural of vṛkṣa-agni-heti-ekāśani-bhūbhṛt

vṛkṣa-agni-heti-ekāśani-bhūbhṛt - composed of trees, fire, weapons, single thunderbolts, and mountains

Compound type : dvandva (vṛkṣa+agni+heti+ekāśani+bhūbhṛt)

• vṛkṣa – tree
  noun (masculine)
• agni – fire, god of fire
  noun (masculine)
• heti – weapon, missile, projectile
  noun (feminine)
• ekāśani – single thunderbolt
  noun (feminine)
  eka (one, single) + aśani (thunderbolt)
• bhūbhṛt – mountain, king
  noun (masculine)
  From bhū (earth) + bhṛ (to bear, support)
  Root: bhṛ (class 1)

Note: Modifies 'varṣāṇi' (showers) as their content.