महाभारतः mahābhārataḥ - book-12, chapter-272, verse-10

शक्रस्य तु तदा राजन्नूरुस्तम्भो व्यजायत ।
भयाद्वृत्रस्य सहसा दृष्ट्वा तद्रूपमुत्तमम् ॥१०॥

10. śakrasya tu tadā rājannūrustambho vyajāyata ,
bhayādvṛtrasya sahasā dṛṣṭvā tadrūpamuttamam.

10. śakrasya tu tadā rājan ūrustambhaḥ vyajāyata
bhayāt vṛtrasya sahasā dṛṣṭvā tat rūpam uttamam

10. rājan,
tadā tu śakrasya vṛtrasya tat uttamam rūpam sahasā dṛṣṭvā bhayāt ūrustambhaḥ vyajāyata

10. But then, O King, upon suddenly seeing that extraordinary form, Indra's (Śakra's) thighs became paralyzed out of fear of Vṛtra.

Words meanings summery:

• शक्रस्य (śakrasya) - of Indra (Śakra)

• तु (tu) - but, indeed, yet

• तदा (tadā) - then, at that time

• राजन् (rājan) - O king

• ऊरुस्तम्भः (ūrustambhaḥ) - paralysis of the thighs, thigh-stiffness

• व्यजायत (vyajāyata) - it occurred, it manifested, it was born

• भयात् (bhayāt) - from fear

• वृत्रस्य (vṛtrasya) - of Vṛtra

• सहसा (sahasā) - suddenly, quickly, forcibly

• दृष्ट्वा (dṛṣṭvā) - having seen

• तत् (tat) - that, its

• रूपम् (rūpam) - form, appearance

• उत्तमम् (uttamam) - excellent, supreme, extraordinary

Words meanings and morphology

शक्रस्य (śakrasya) - of Indra (Śakra)

(proper noun)

Genitive, masculine, singular of śakra

śakra - Indra (name of the king of gods), powerful, mighty

तु (tu) - but, indeed, yet

(indeclinable)

तदा (tadā) - then, at that time

(indeclinable)

राजन् (rājan) - O king

(noun)

Vocative, masculine, singular of rājan

rājan - king, ruler, prince

ऊरुस्तम्भः (ūrustambhaḥ) - paralysis of the thighs, thigh-stiffness

(noun)

Nominative, masculine, singular of ūrustambha

ūrustambha - paralysis of the thighs, stiffness in the thighs

Compound type : ṣaṣṭhī-tatpuruṣa (ūru+stambha)

• ūru – thigh, upper leg
  noun (masculine)
• stambha – pillar, post, stiffness, paralysis
  noun (masculine)
  Root: stambh (class 5)

व्यजायत (vyajāyata) - it occurred, it manifested, it was born

(verb)

3rd person , singular, middle, past imperfect (laṅ) of jan

Root verb with prefixes vi- and ā-.

Prefixes: vi+ā

Root: jan (class 4)

भयात् (bhayāt) - from fear

(noun)

Ablative, neuter, singular of bhaya

bhaya - fear, dread, apprehension

वृत्रस्य (vṛtrasya) - of Vṛtra

(proper noun)

Genitive, masculine, singular of vṛtra

vṛtra - Vṛtra (a Vedic asura, personification of drought, killed by Indra)

सहसा (sahasā) - suddenly, quickly, forcibly

(indeclinable)

दृष्ट्वा (dṛṣṭvā) - having seen

(indeclinable)

absolutive (gerund)

Derived from root dṛś (to see).

Root: dṛś (class 1)

तत् (tat) - that, its

(pronoun)

Accusative, neuter, singular of tad

tad - that, it, he, she

रूपम् (rūpam) - form, appearance

(noun)

Accusative, neuter, singular of rūpa

rūpa - form, appearance, shape, beauty

उत्तमम् (uttamam) - excellent, supreme, extraordinary

(adjective)

Accusative, neuter, singular of uttama

uttama - highest, best, excellent, supreme, chief