महाभारतः mahābhārataḥ - book-3, chapter-44, verse-25

वज्रग्रहणचिह्नेन करेण बलसूदनः ।
मुहुर्मुहुर्वज्रधरो बाहू संस्फालयञ्शनैः ॥२५॥

25. vajragrahaṇacihnena kareṇa balasūdanaḥ ,
muhurmuhurvajradharo bāhū saṁsphālayañśanaiḥ.

25. vajragrahaṇacihnena kareṇa balasūdanaḥ
muhurmuhuḥ vajradharaḥ bāhū saṃsphālayan śanaiḥ

25. The slayer of Bala (Indra), the thunderbolt-bearer (Indra), repeatedly and gently stroked (Arjuna's) two arms with his hand, which bore the mark of holding the thunderbolt (vajra).

Words meanings summery:

• वज्रग्रहणचिह्नेन (vajragrahaṇacihnena) - with his hand, which bore the mark of holding the thunderbolt (vajra) (by the mark of holding the thunderbolt)

• करेण (kareṇa) - with his hand (with a hand)

• बलसूदनः (balasūdanaḥ) - the slayer of Bala (Indra) (slayer of Bala (Indra))

• मुहुर्मुहुः (muhurmuhuḥ) - repeatedly (repeatedly, again and again, frequently)

• वज्रधरः (vajradharaḥ) - the thunderbolt-bearer (Indra) (thunderbolt-bearer (Indra))

• बाहू (bāhū) - (Arjuna's) two arms (two arms)

• संस्फालयन् (saṁsphālayan) - gently stroking (gently patting, stroking, shaking (arms))

• शनैः (śanaiḥ) - gently (slowly, gradually, gently)

Words meanings and morphology

वज्रग्रहणचिह्नेन (vajragrahaṇacihnena) - with his hand, which bore the mark of holding the thunderbolt (vajra) (by the mark of holding the thunderbolt)

(noun)

Instrumental, neuter, singular of vajragrahaṇacihna

vajragrahaṇacihna - mark of holding the thunderbolt

Compound type : tatpurusha (vajra+grahaṇa+cihna)

• vajra – thunderbolt, diamond
  noun (masculine)
• grahaṇa – taking, seizing, holding, grasp
  noun (neuter)
  From root grah (to seize).
  Root: grah (class 9)
• cihna – mark, sign, symbol, distinguishing feature
  noun (neuter)

Note: This entire compound describes the hand (`kareṇa`).

करेण (kareṇa) - with his hand (with a hand)

(noun)

Instrumental, masculine, singular of kara

kara - hand, ray (of light), tax, doer

From root kṛ (to do).

Root: kṛ (class 8)

बलसूदनः (balasūdanaḥ) - the slayer of Bala (Indra) (slayer of Bala (Indra))

(proper noun)

Nominative, masculine, singular of balasūdana

balasūdana - destroyer of Bala; an epithet of Indra

Compound type : tatpurusha (bala+sūdana)

• bala – Bala (name of an asura); strength, power
  proper noun (masculine)
• sūdana – slayer, destroyer, crusher
  noun (masculine)
  From root sūd (to destroy).
  Root: sūd (class 10)

मुहुर्मुहुः (muhurmuhuḥ) - repeatedly (repeatedly, again and again, frequently)

(indeclinable)

Repetition of `muhus`.

वज्रधरः (vajradharaḥ) - the thunderbolt-bearer (Indra) (thunderbolt-bearer (Indra))

(proper noun)

Nominative, masculine, singular of vajradhara

vajradhara - thunderbolt-bearer; an epithet of Indra

Compound type : tatpurusha (vajra+dhara)

• vajra – thunderbolt, diamond
  noun (masculine)
• dhara – holding, bearing, wearing
  adjective (masculine)
  Derived from root dhṛ (to hold).
  Root: dhṛ (class 1)

बाहू (bāhū) - (Arjuna's) two arms (two arms)

(noun)

Accusative, masculine, dual of bāhu

bāhu - arm

u-stem noun.

संस्फालयन् (saṁsphālayan) - gently stroking (gently patting, stroking, shaking (arms))

(participle)

Nominative, masculine, singular of sphālayat

sphālayat - shaking, causing to expand, patting

Present Active Participle (Causative)

From root sphal (to tremble, shake) in the causative, with prefix sam.

Prefix: sam

Root: sphal (class 1)

Note: Present active participle of `saṃsphālaya`.

शनैः (śanaiḥ) - gently (slowly, gradually, gently)

(indeclinable)

Instrumental plural of `śanaka` used adverbially.