महाभारतः mahābhārataḥ - book-7, chapter-69, verse-54

त्वष्ट्रा पुरा तपस्तप्त्वा वर्षायुतशतं तदा ।
वृत्रो विनिर्मितो देवाः प्राप्यानुज्ञां महेश्वरात् ॥५४॥

54. tvaṣṭrā purā tapastaptvā varṣāyutaśataṁ tadā ,
vṛtro vinirmito devāḥ prāpyānujñāṁ maheśvarāt.

54. tvaṣṭrā purā tapaḥ taptvā varṣāyutaśatam tadā
vṛtraḥ vinirmitaḥ devāḥ prāpya anujñām maheśvarāt

54. O gods, formerly, Tvaṣṭā, having performed severe penance (tapas) for a hundred myriad years, then created Vṛtra after obtaining permission from Maheśvara.

Words meanings summery:

• त्वष्ट्रा (tvaṣṭrā) - by Tvaṣṭā

• पुरा (purā) - formerly, in the past

• तपः (tapaḥ) - austerity, penance

• तप्त्वा (taptvā) - having performed penance, having heated

• वर्षायुतशतम् (varṣāyutaśatam) - a hundred myriad years

• तदा (tadā) - then, at that time

• वृत्रः (vṛtraḥ) - Vṛtra (name of a demon)

• विनिर्मितः (vinirmitaḥ) - created, fashioned

• देवाः (devāḥ) - O gods, gods

• प्राप्य (prāpya) - having obtained, having reached

• अनुज्ञाम् (anujñām) - permission, assent

• महेश्वरात् (maheśvarāt) - from Maheśvara (Shiva)

Words meanings and morphology

त्वष्ट्रा (tvaṣṭrā) - by Tvaṣṭā

(proper noun)

Instrumental, masculine, singular of tvaṣṭṛ

tvaṣṭṛ - a divine artisan, the celestial architect

पुरा (purā) - formerly, in the past

(indeclinable)

तपः (tapaḥ) - austerity, penance

(noun)

Accusative, neuter, singular of tapas

tapas - penance, austerity, heat

From root tap (to heat, to perform penance)

Root: tap (class 4)

तप्त्वा (taptvā) - having performed penance, having heated

(indeclinable)

Absolutive (gerund)

Formed from root tap + ktvā suffix

Root: tap (class 4)

वर्षायुतशतम् (varṣāyutaśatam) - a hundred myriad years

(noun)

Accusative, neuter, singular of varṣāyutaśata

varṣāyutaśata - a hundred myriad years

Compound type : karmadhāraya (varṣa+ayuta+śata)

• varṣa – year, rain
  noun (neuter)
  Root: vṛṣ (class 1)
• ayuta – ten thousand
  noun (neuter)
• śata – hundred
  noun (neuter)

तदा (tadā) - then, at that time

(indeclinable)

From pronominal stem tad + dā suffix

वृत्रः (vṛtraḥ) - Vṛtra (name of a demon)

(proper noun)

Nominative, masculine, singular of vṛtra

vṛtra - name of an Asura, a cloud demon

Root: vṛ (class 5)

विनिर्मितः (vinirmitaḥ) - created, fashioned

(adjective)

Nominative, masculine, singular of vinirmita

vinirmita - created, made, fashioned

Past Passive Participle

Formed from vi + nir + root mā (to measure, to make) + kta suffix

Prefixes: vi+nir

Root: mā (class 2)

देवाः (devāḥ) - O gods, gods

(noun)

Vocative, masculine, plural of deva

deva - god, deity

Root: div (class 4)

Note: Used as a vocative.

प्राप्य (prāpya) - having obtained, having reached

(indeclinable)

Absolutive (gerund)

Formed from pra + root āp (to obtain, to reach) + ya suffix

Prefix: pra

Root: āp (class 5)

अनुज्ञाम् (anujñām) - permission, assent

(noun)

Accusative, feminine, singular of anujñā

anujñā - permission, assent, leave

From anu + root jñā (to know, to permit)

Prefix: anu

Root: jñā (class 9)

महेश्वरात् (maheśvarāt) - from Maheśvara (Shiva)

(proper noun)

Ablative, masculine, singular of maheśvara

maheśvara - The Great Lord (an epithet of Shiva)

From mahā (great) + īśvara (lord)

Compound type : karmadhāraya (mahā+īśvara)

• mahā – great, large
  adjective
• īśvara – lord, master
  noun (masculine)
  From root īś (to be master of)
  Root: īś (class 2)