महाभारतः mahābhārataḥ - book-12, chapter-335, verse-45

तस्य मूर्धा समभवद्द्यौः सनक्षत्रतारका ।
केशाश्चास्याभवन्दीर्घा रवेरंशुसमप्रभाः ॥४५॥

45. tasya mūrdhā samabhavaddyauḥ sanakṣatratārakā ,
keśāścāsyābhavandīrghā raveraṁśusamaprabhāḥ.

45. tasya mūrdhā samabhavat dyauḥ sanakṣatratārakā
keśāḥ ca asya abhavan dīrghāḥ raveḥ aṃśusamaprabhāḥ

45. tasya mūrdhā sanakṣatratārakā dyauḥ samabhavat asya
keśāḥ ca dīrghāḥ raveḥ aṃśusamaprabhāḥ abhavan

45. His head became the sky, complete with constellations and stars. And his hairs became long, shining with the brilliance of the sun's rays.

Words meanings summery:

• तस्य (tasya) - his (referring to the Hayagriva form of Vishnu) (of him, his)

• मूर्धा (mūrdhā) - his head (head, skull, summit)

• समभवत् (samabhavat) - became (transformed into) (became, appeared, came into being)

• द्यौः (dyauḥ) - the sky/heavens (sky, heaven, day)

• सनक्षत्रतारका (sanakṣatratārakā) - adorned with (or including) constellations and stars (with constellations and stars)

• केशाः (keśāḥ) - his (many) hairs (hairs, locks of hair)

• च (ca) - and (and, also)

• अस्य (asya) - of him, his (of him, of this)

• अभवन् (abhavan) - they became (were transformed into) (they became, they were)

• दीर्घाः (dīrghāḥ) - long (describing the hairs) (long, tall, extensive)

• रवेः (raveḥ) - of the sun

• अंशुसमप्रभाः (aṁśusamaprabhāḥ) - shining like the rays of the sun (having splendor equal to sun's rays)

Words meanings and morphology

तस्य (tasya) - his (referring to the Hayagriva form of Vishnu) (of him, his)

(pronoun)

Genitive, masculine, singular of tad

tad - that, he, she, it

मूर्धा (mūrdhā) - his head (head, skull, summit)

(noun)

Nominative, masculine, singular of mūrdhan

mūrdhan - head, skull, summit, top

समभवत् (samabhavat) - became (transformed into) (became, appeared, came into being)

(verb)

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

Imperfect active indicative

From sam + bhū (to be, become), 3rd singular imperfect.

Prefix: sam

Root: bhū (class 1)

द्यौः (dyauḥ) - the sky/heavens (sky, heaven, day)

(noun)

Nominative, feminine, singular of dyu

dyu - sky, heaven, lustre, day

Root: div (class 4)

Note: Predicate nominative for mūrdhā.

सनक्षत्रतारका (sanakṣatratārakā) - adorned with (or including) constellations and stars (with constellations and stars)

(adjective)

Nominative, feminine, singular of sanakṣatratārakā

sanakṣatratārakā - accompanied by constellations and stars

Compound.

Compound type : bahuvrīhi (sa+nakṣatra+tārakā)

• sa – with, together with
  indeclinable
  Prefix indicating accompaniment.
• nakṣatra – star, constellation, lunar mansion
  noun (neuter)
• tārakā – star, pupil of the eye
  noun (feminine)

Note: Qualifies dyauḥ.

केशाः (keśāḥ) - his (many) hairs (hairs, locks of hair)

(noun)

Nominative, masculine, plural of keśa

keśa - hair, lock of hair, mane

च (ca) - and (and, also)

(indeclinable)

अस्य (asya) - of him, his (of him, of this)

(pronoun)

Genitive, masculine, singular of idam

idam - this, he, she, it

अभवन् (abhavan) - they became (were transformed into) (they became, they were)

(verb)

3rd person , plural, active, past imperfect (laṅ) of bhū

Imperfect active indicative

From root bhū (to be, become), 3rd plural imperfect.

Root: bhū (class 1)

दीर्घाः (dīrghāḥ) - long (describing the hairs) (long, tall, extensive)

(adjective)

Nominative, masculine, plural of dīrgha

dīrgha - long, tall, extensive, prolonged

Note: Qualifies keśāḥ.

रवेः (raveḥ) - of the sun

(noun)

Genitive, masculine, singular of ravi

ravi - sun, sun-god

Root: ru (class 2)

अंशुसमप्रभाः (aṁśusamaprabhāḥ) - shining like the rays of the sun (having splendor equal to sun's rays)

(adjective)

Nominative, masculine, plural of aṃśusamaprabhā

aṁśusamaprabhā - having splendor equal to sun's rays, radiant as sunbeams

Compound.

Compound type : bahuvrīhi (aṃśu+sama+prabhā)

• aṃśu – ray, beam, fiber
  noun (masculine)
• sama – equal, similar, same
  adjective (masculine)
• prabhā – light, splendor, radiance
  noun (feminine)

Note: Qualifies keśāḥ.