महाभारतः mahābhārataḥ - book-1, chapter-65, verse-23

असावादित्यसंकाशो विश्वामित्रो महातपाः ।
तप्यमानस्तपो घोरं मम कम्पयते मनः ॥२३॥

23. asāvādityasaṁkāśo viśvāmitro mahātapāḥ ,
tapyamānastapo ghoraṁ mama kampayate manaḥ.

23. asau ādityasaṃkāśaḥ viśvāmitraḥ mahātapāḥ
tapyamānaḥ tapaḥ ghoram mama kampayate manaḥ

23. That Viśvāmitra, radiant as the sun and performing great austerities, is engaged in severe penance, and this shakes my mind.

Words meanings summery:

• असौ (asau) - that (Viśvāmitra) (that, that one (masculine))

• आदित्यसंकाशः (ādityasaṁkāśaḥ) - radiant as the sun (like the sun, sun-like, radiant as the sun)

• विश्वामित्रः (viśvāmitraḥ) - Viśvāmitra (Viśvāmitra (a sage))

• महातपाः (mahātapāḥ) - performing great austerities (of great austerities, having great penance)

• तप्यमानः (tapyamānaḥ) - engaged in penance (performing penance, being heated, being tormented)

• तपः (tapaḥ) - penance (penance, austerity)

• घोरम् (ghoram) - severe (terrible, severe, dreadful)

• मम (mama) - my (my, to me, for me)

• कम्पयते (kampayate) - shakes (shakes, causes to tremble, agitates)

• मनः (manaḥ) - mind (mind, heart, intellect)

Words meanings and morphology

असौ (asau) - that (Viśvāmitra) (that, that one (masculine))

(pronoun)

Nominative, masculine, singular of adas

adas - that, yonder

आदित्यसंकाशः (ādityasaṁkāśaḥ) - radiant as the sun (like the sun, sun-like, radiant as the sun)

(adjective)

Nominative, masculine, singular of ādityasaṃkāśa

ādityasaṁkāśa - sun-like, radiant as the sun

Compound type : tatpurusha (āditya+saṃkāśa)

• āditya – the sun, a son of Aditi
  noun (masculine)
• saṃkāśa – similar, like, resembling, appearance
  adjective (masculine)
  Prefix: sam
  Root: kāś (class 1)

Note: Modifies 'viśvāmitraḥ'

विश्वामित्रः (viśvāmitraḥ) - Viśvāmitra (Viśvāmitra (a sage))

(proper noun)

Nominative, masculine, singular of viśvāmitra

viśvāmitra - Viśvāmitra (a celebrated Vedic sage)

Compound type : bahuvrīhi (viśva+mitra)

• viśva – all, whole, universal
  adjective (masculine)
• mitra – friend, companion
  noun (masculine)

महातपाः (mahātapāḥ) - performing great austerities (of great austerities, having great penance)

(adjective)

Nominative, masculine, singular of mahā-tapas

mahā-tapas - great penance, great asceticism

Compound type : bahuvrīhi (mahā+tapas)

• mahā – great, large, mighty
  adjective
• tapas – austerity, penance, heat
  noun (neuter)

Note: Modifies 'viśvāmitraḥ'

तप्यमानः (tapyamānaḥ) - engaged in penance (performing penance, being heated, being tormented)

(nominal form)

Nominative, masculine, singular of tapyāmana

tapyāmana - performing penance, undergoing austerity, being heated

Present Middle Participle

From root 'tap' (to heat, to perform penance)

Root: tap (class 1)

Note: Modifies 'viśvāmitraḥ'

तपः (tapaḥ) - penance (penance, austerity)

(noun)

Accusative, neuter, singular of tapas

tapas - austerity, penance, heat, spiritual fervor

घोरम् (ghoram) - severe (terrible, severe, dreadful)

(adjective)

Accusative, neuter, singular of ghora

ghora - terrible, dreadful, fierce, severe

Note: Modifies 'tapaḥ'

मम (mama) - my (my, to me, for me)

(pronoun)

Genitive, singular of asmad

asmad - I, me

कम्पयते (kampayate) - shakes (shakes, causes to tremble, agitates)

(verb)

3rd person , singular, middle, present (laṭ) of kamp

Causative Present

Causative stem kampaya- + Present 3rd singular middle ending

Root: kamp (class 1)

Note: Causative verb, 'causes to tremble'

मनः (manaḥ) - mind (mind, heart, intellect)

(noun)

Nominative, neuter, singular of manas

manas - mind, intellect, heart, spirit

Root: man (class 4)

Note: Or accusative, but nominative makes more sense as the subject that is shaken.