महाभारतः mahābhārataḥ - book-6, chapter-116, verse-30

वासुदेवसहायस्त्वं महत्कर्म करिष्यसि ।
यन्नोत्सहति देवेन्द्रः सह देवैरपि ध्रुवम् ॥३०॥

30. vāsudevasahāyastvaṁ mahatkarma kariṣyasi ,
yannotsahati devendraḥ saha devairapi dhruvam.

30. vāsudevasahāyaḥ tvam mahat karma kariṣyasi yat
na utsahati devendraḥ saha devaiḥ api dhruvam

30. tvam vāsudevasahāyaḥ [san] mahat karma kariṣyasi yat [karma] devendraḥ api devaiḥ saha dhruvam na utsahati.

30. You, aided by Vasudeva, will certainly accomplish a great deed (karma) that even Indra, the lord of gods, cannot achieve, even with the help of other deities.

Words meanings summery:

• वासुदेवसहायः (vāsudevasahāyaḥ) - aided by Vasudeva (having Vasudeva as an aid/helper)

• त्वम् (tvam) - you

• महत् (mahat) - great, mighty, large

• कर्म (karma) - a great accomplishment (action, deed, work (karma))

• करिष्यसि (kariṣyasi) - you will do/perform

• यत् (yat) - which

• न (na) - not

• उत्सहति (utsahati) - can accomplish (he is able, he undertakes)

• देवेन्द्रः (devendraḥ) - Indra, lord of the gods

• सह (saha) - with, together with

• देवैः (devaiḥ) - by the gods, with the gods

• अपि (api) - even, also

• ध्रुवम् (dhruvam) - certainly, surely, firmly

Words meanings and morphology

वासुदेवसहायः (vāsudevasahāyaḥ) - aided by Vasudeva (having Vasudeva as an aid/helper)

(adjective)

Nominative, masculine, singular of vāsudevasahāya

vāsudevasahāya - having Vasudeva as a helper/companion

Compound type : bahuvrihi (vāsudeva+sahāya)

• vāsudeva – Vasudeva (a name for Krishna)
  proper noun (masculine)
• sahāya – helper, companion, associate
  noun (masculine)

त्वम् (tvam) - you

(pronoun)

Nominative, singular of yuṣmad

yuṣmad - you

महत् (mahat) - great, mighty, large

(adjective)

Accusative, neuter, singular of mahat

mahat - great, large, important

कर्म (karma) - a great accomplishment (action, deed, work (karma))

(noun)

Accusative, neuter, singular of karma

karma - action, deed, work, ritual, fate (karma)

derived from root kṛ with man suffix

Root: kṛ (class 8)

करिष्यसि (kariṣyasi) - you will do/perform

(verb)

2nd person , singular, active, future indicative (lṛṭ) of kṛ

Root: kṛ (class 8)

यत् (yat) - which

(pronoun)

Nominative, neuter, singular of yad

yad - which, what, that

Note: Refers to 'karma'

न (na) - not

(indeclinable)

उत्सहति (utsahati) - can accomplish (he is able, he undertakes)

(verb)

3rd person , singular, active, present indicative (laṭ) of utsah

Prefix: ud

Root: sah (class 1)

देवेन्द्रः (devendraḥ) - Indra, lord of the gods

(proper noun)

Nominative, masculine, singular of devendra

devendra - Indra (chief of the gods), lord of gods

Compound type : tatpurusha (deva+indra)

• deva – god, deity
  noun (masculine)
• indra – Indra (name of a Vedic deity, chief of gods)
  proper noun (masculine)

सह (saha) - with, together with

(indeclinable)

देवैः (devaiḥ) - by the gods, with the gods

(noun)

Instrumental, masculine, plural of deva

deva - god, deity, divine

अपि (api) - even, also

(indeclinable)

ध्रुवम् (dhruvam) - certainly, surely, firmly

(indeclinable)