महाभारतः mahābhārataḥ - book-3, chapter-81, verse-18

ततो मुञ्जवटं नाम महादेवस्य धीमतः ।
तत्रोष्य रजनीमेकां गाणपत्यमवाप्नुयात् ॥१८॥

18. tato muñjavaṭaṁ nāma mahādevasya dhīmataḥ ,
tatroṣya rajanīmekāṁ gāṇapatyamavāpnuyāt.

18. tataḥ muñjavaṭam nāma mahādevasya dhīmataḥ |
tatra uṣya rajanīm ekām gāṇapatyam avāpnuyāt

18. Thereafter, one should visit the place called Muñjavaṭa, which belongs to the wise Mahādeva. By staying there for a single night, a person would attain the status of a gaṇa-pati (a chief attendant of Śiva).

Words meanings summery:

• ततः (tataḥ) - thereafter (thereafter, then, from there)

• मुञ्जवटम् (muñjavaṭam) - the place named Muñjavaṭa (Muñjavaṭa (a place name))

• नाम (nāma) - called, named (named, by name)

• महादेवस्य (mahādevasya) - of Lord Śiva (of Mahādeva, of Śiva)

• धीमतः (dhīmataḥ) - of the wise Mahādeva (of the wise, intelligent)

• तत्र (tatra) - at that very place (Muñjavaṭa) (there, in that place)

• उष्य (uṣya) - having spent time, having lodged (having stayed, having dwelt)

• रजनीम् (rajanīm) - a night (night)

• एकाम् (ekām) - a single (one, a single)

• गाणपत्यम् (gāṇapatyam) - the status of being a chief attendant (gaṇa-pati) of Śiva (the state of being a gaṇa-pati, lordship of gaṇas, dignity of Gaṇeśa)

• अवाप्नुयात् (avāpnuyāt) - would obtain (one would obtain, might obtain)

Words meanings and morphology

ततः (tataḥ) - thereafter (thereafter, then, from there)

(indeclinable)

ablative of 'tad' used as an adverb

मुञ्जवटम् (muñjavaṭam) - the place named Muñjavaṭa (Muñjavaṭa (a place name))

(proper noun)

Accusative, neuter, singular of muñjavaṭa

muñjavaṭa - Muñjavaṭa (name of a sacred place, literally 'muñja-fig tree')

Compound type : tatpuruṣa (muñja+vaṭa)

• muñja – a kind of grass (Saccharum Munja), reed
  noun (masculine)
• vaṭa – banyan tree (Ficus Indica)
  noun (masculine)

Note: Object of an implied verb of motion (e.g., 'should go to').

नाम (nāma) - called, named (named, by name)

(indeclinable)

used as an adverb meaning 'by name, namely'

Note: Used adverbially to introduce a name.

महादेवस्य (mahādevasya) - of Lord Śiva (of Mahādeva, of Śiva)

(proper noun)

Genitive, masculine, singular of mahādeva

mahādeva - Great God, a name of Śiva

Compound type : karmadhāraya (mahā+deva)

• mahā – great, mighty
  adjective (feminine)
• deva – god, deity
  noun (masculine)

Note: Possessive, referring to the ownership or dedication of the place.

धीमतः (dhīmataḥ) - of the wise Mahādeva (of the wise, intelligent)

(adjective)

Genitive, masculine, singular of dhīmat

dhīmat - wise, intelligent, thoughtful

possessive adjective from 'dhī' (intellect)

Note: Qualifies 'mahādevasya'.

तत्र (tatra) - at that very place (Muñjavaṭa) (there, in that place)

(indeclinable)

locative of 'tad' used as an adverb

Note: Adverb of place.

उष्य (uṣya) - having spent time, having lodged (having stayed, having dwelt)

(indeclinable)

absolutive

formed from root 'vas' (with guṇa lengthening to 'uṣ' in this form) with suffix 'ya'

Root: vas (class 1)

Note: Absolutive (gerund) indicating a preceding action.

रजनीम् (rajanīm) - a night (night)

(noun)

Accusative, feminine, singular of rajanī

rajanī - night

Note: Object of implied duration (for a night).

एकाम् (ekām) - a single (one, a single)

(numeral)

Note: Qualifies 'rajanīm'.

गाणपत्यम् (gāṇapatyam) - the status of being a chief attendant (gaṇa-pati) of Śiva (the state of being a gaṇa-pati, lordship of gaṇas, dignity of Gaṇeśa)

(noun)

Accusative, neuter, singular of gāṇapatya

gāṇapatya - the office or dignity of a gaṇapati; the host of Gaṇas; belonging to Gaṇapati

derived from 'gaṇapati' with suffix 'ya'

Note: Object of 'avāpnuyāt'.

अवाप्नुयात् (avāpnuyāt) - would obtain (one would obtain, might obtain)

(verb)

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

Prefix: ava

Root: āp (class 5)

Note: From root 'āp' with prefix 'ava'.