महाभारतः mahābhārataḥ - book-3, chapter-98, verse-5

ततो वृत्रवधे यत्नमकुर्वंस्त्रिदशाः पुरा ।
पुरंदरं पुरस्कृत्य ब्रह्माणमुपतस्थिरे ॥५॥

5. tato vṛtravadhe yatnamakurvaṁstridaśāḥ purā ,
puraṁdaraṁ puraskṛtya brahmāṇamupatasthire.

5. tataḥ vṛtravadhe yatnam akurvan tridaśāḥ purā
purandaram puraskṛtya brahmāṇam upatastire

5. Then, the gods exerted themselves for the slaying of Vṛtra. Previously, having made Purandara (Indra) their leader, they approached Brahmā.

Words meanings summery:

• ततः (tataḥ) - then, consequently (thereupon, then, from that)

• वृत्रवधे (vṛtravadhe) - for the slaying of Vṛtra (in the slaying of Vṛtra, for the killing of Vṛtra)

• यत्नम् (yatnam) - effort (effort, exertion, endeavor)

• अकुर्वन् (akurvan) - they exerted (made effort) (they did, they made)

• त्रिदशाः (tridaśāḥ) - the gods (the gods (literally 'the thirty'))

• पुरा (purā) - previously, earlier (formerly, previously, in ancient times)

• पुरन्दरम् (purandaram) - Purandara (Indra) (Indra (destroyer of cities))

• पुरस्कृत्य (puraskṛtya) - having appointed as leader (having placed in front, having made foremost, having honored)

• ब्रह्माणम् (brahmāṇam) - Brahmā (Brahmā (the creator god))

• उपतस्तिरे (upatastire) - they approached (they approached, they stood near, they paid homage)

Words meanings and morphology

ततः (tataḥ) - then, consequently (thereupon, then, from that)

(indeclinable)

वृत्रवधे (vṛtravadhe) - for the slaying of Vṛtra (in the slaying of Vṛtra, for the killing of Vṛtra)

(noun)

Locative, masculine, singular of vṛtravadha

vṛtravadha - the slaying or killing of Vṛtra

Tatpurusha compound: Vṛtrasya vadhaḥ

Compound type : tatpurusha (vṛtra+vadha)

• vṛtra – name of a powerful demon
  proper noun (masculine)
• vadha – killing, slaying, striking, destruction
  noun (masculine)
  from root han (to strike, kill)
  Root: han (class 2)

यत्नम् (yatnam) - effort (effort, exertion, endeavor)

(noun)

Accusative, masculine, singular of yatna

yatna - effort, exertion, endeavor, striving

Root: yat (class 1)

अकुर्वन् (akurvan) - they exerted (made effort) (they did, they made)

(verb)

3rd person , plural, active, past imperfect (laṅ) of kṛ

Imperfect Active

3rd person plural, Imperfect Tense, Active Voice, from root kṛ

Root: kṛ (class 8)

त्रिदशाः (tridaśāḥ) - the gods (the gods (literally 'the thirty'))

(noun)

Nominative, masculine, plural of tridaśa

tridaśa - god, deity (literally: 'having thirty', referring to the traditional number of Vedic gods)

पुरा (purā) - previously, earlier (formerly, previously, in ancient times)

(indeclinable)

पुरन्दरम् (purandaram) - Purandara (Indra) (Indra (destroyer of cities))

(proper noun)

Accusative, masculine, singular of purandara

purandara - destroyer of cities, an epithet of Indra

compound of pura (city) + dara (destroyer)

पुरस्कृत्य (puraskṛtya) - having appointed as leader (having placed in front, having made foremost, having honored)

(indeclinable)

absolutive

absolutive (lvap) from root kṛ (to do, make) with upasarga puras

Prefix: puras

Root: kṛ (class 8)

ब्रह्माणम् (brahmāṇam) - Brahmā (Brahmā (the creator god))

(proper noun)

Accusative, masculine, singular of brahman

brahman - the creator god Brahmā

उपतस्तिरे (upatastire) - they approached (they approached, they stood near, they paid homage)

(verb)

3rd person , plural, middle, perfect (lit) of upa-sthā

Perfect Middle

3rd person plural, Perfect Tense, Middle Voice, from root sthā (to stand) with upasarga upa

Prefix: upa

Root: sthā (class 1)