महाभारतः mahābhārataḥ - book-5, chapter-9, verse-7

तस्य दृष्ट्वा तपोवीर्यं सत्त्वं चामिततेजसः ।
विषादमगमच्छक्र इन्द्रोऽयं मा भवेदिति ॥७॥

7. tasya dṛṣṭvā tapovīryaṁ sattvaṁ cāmitatejasaḥ ,
viṣādamagamacchakra indro'yaṁ mā bhavediti.

7. tasya dṛṣṭvā tapovīryam sattvam ca amitatejasaḥ
viṣādam agamat śakraḥ indraḥ ayam mā bhavet iti

7. Having seen his spiritual ascetic (tapas) prowess, his strength, and his immeasurable splendor, Śakra (Indra) became despondent, thinking, "Lest this one become Indra!"

Words meanings summery:

• तस्य (tasya) - his (referring to Viśvarūpa's) (his, of him, of that)

• दृष्ट्वा (dṛṣṭvā) - having seen (having seen, after seeing)

• तपोवीर्यम् (tapovīryam) - his spiritual ascetic prowess (tapas) (power of austerity (tapas), ascetic prowess)

• सत्त्वम् (sattvam) - his strength, or inner fortitude (strength, courage, essence, being, goodness)

• च (ca) - and (and, also)

• अमिततेजसः (amitatejasaḥ) - of his immeasurable splendor (of immeasurable splendor/energy)

• विषादम् (viṣādam) - despondency (despondency, dejection, sadness)

• अगमत् (agamat) - he fell into (despondency) (he went, he reached, he obtained)

• शक्रः (śakraḥ) - Śakra (a name of Indra) (Indra, powerful one)

• इन्द्रः (indraḥ) - Indra (Indra (king of gods))

• अयम् (ayam) - this one (referring to Viśvarūpa) (this, this one)

• मा (mā) - lest (not, lest)

• भवेत् (bhavet) - he might become (may he be, should he be, he might be)

• इति (iti) - thus (marking the end of a thought or quote) (thus, in this way, so)

Words meanings and morphology

तस्य (tasya) - his (referring to Viśvarūpa's) (his, of him, of that)

(pronoun)

Genitive, masculine, singular of tad

tad - that, he/she/it

दृष्ट्वा (dṛṣṭvā) - having seen (having seen, after seeing)

(indeclinable)

Absolutive (Gerund)

from √dṛś + tvā

Root: dṛś (class 1)

तपोवीर्यम् (tapovīryam) - his spiritual ascetic prowess (tapas) (power of austerity (tapas), ascetic prowess)

(noun)

Accusative, neuter, singular of tapovīrya

tapovīrya - power of austerity (tapas), ascetic prowess, strength of penance

Compound type : tatpurusha (tapas+vīrya)

• tapas – spiritual austerity, penance, heat
  noun (neuter)
  Root: tap (class 1)
• vīrya – heroism, valor, strength, power
  noun (neuter)
  Root: vīr (class 1)

सत्त्वम् (sattvam) - his strength, or inner fortitude (strength, courage, essence, being, goodness)

(noun)

Accusative, neuter, singular of sattva

sattva - strength, courage, essence, being, existence, goodness (one of the three guṇas)

from 'sat' (being) + 'tva' (abstract suffix)

Root: as (class 2)

च (ca) - and (and, also)

(indeclinable)

अमिततेजसः (amitatejasaḥ) - of his immeasurable splendor (of immeasurable splendor/energy)

(adjective)

Genitive, masculine, singular of amitatejas

amitatejas - of immeasurable splendor/energy, having boundless brilliance

Compound type : bahuvrīhi (amita+tejas)

• amita – unmeasured, immeasurable, boundless
  participle (masculine)
  Past Passive Participle
  from a (negative prefix) + √mā (to measure)
  Prefix: a
  Root: mā (class 2)
• tejas – splendor, brilliance, energy, fiery energy
  noun (neuter)
  Root: tij

Note: refers to Viśvarūpa, agreeing with 'tasya'

विषादम् (viṣādam) - despondency (despondency, dejection, sadness)

(noun)

Accusative, masculine, singular of viṣāda

viṣāda - despondency, dejection, sadness, discouragement

from √sad (to sink) with vi (apart, away)

Prefix: vi

Root: sad (class 1)

अगमत् (agamat) - he fell into (despondency) (he went, he reached, he obtained)

(verb)

3rd person , singular, active, past imperfect (laṅ) of gam

Imperfect 3rd singular Parasmaipada

from √gam

Root: gam (class 1)

शक्रः (śakraḥ) - Śakra (a name of Indra) (Indra, powerful one)

(proper noun)

Nominative, masculine, singular of śakra

śakra - Indra, powerful one, mighty

from √śak (to be able)

Root: śak (class 5)

इन्द्रः (indraḥ) - Indra (Indra (king of gods))

(proper noun)

Nominative, masculine, singular of indra

indra - Indra, king of gods, lord

अयम् (ayam) - this one (referring to Viśvarūpa) (this, this one)

(pronoun)

Nominative, masculine, singular of idam

idam - this, this one

मा (mā) - lest (not, lest)

(indeclinable)

used with optative or aorist to express prohibition or fear

भवेत् (bhavet) - he might become (may he be, should he be, he might be)

(verb)

3rd person , singular, active, optative (vidhi-liṅ) of bhū

Optative 3rd singular Parasmaipada

from √bhū

Root: bhū (class 1)

Note: used with 'mā' to express fear or prohibition

इति (iti) - thus (marking the end of a thought or quote) (thus, in this way, so)

(indeclinable)