महाभारतः mahābhārataḥ - book-1, chapter-154, verse-4

तस्यां संसक्तमनसः कौमारब्रह्मचारिणः ।
हृष्टस्य रेतश्चस्कन्द तदृषिर्द्रोण आदधे ॥४॥

4. tasyāṁ saṁsaktamanasaḥ kaumārabrahmacāriṇaḥ ,
hṛṣṭasya retaścaskanda tadṛṣirdroṇa ādadhe.

4. tasyām saṃsaktamanasaḥ kaumārabrahmacāriṇaḥ
hṛṣṭasya retaḥ ca skanda tat ṛṣiḥ droṇaḥ ādadhe

4. With his mind attached to her, and despite being a celibate (brahmacārin) from boyhood, his semen flowed due to excitement. The sage (ṛṣi) Droṇa then received it.

Words meanings summery:

• तस्याम् (tasyām) - in her, to her, for her

• संसक्तमनसः (saṁsaktamanasaḥ) - of one whose mind is attached, of one with an engrossed mind

• कौमारब्रह्मचारिणः (kaumārabrahmacāriṇaḥ) - of a celibate (brahmacārin) from boyhood

• हृष्टस्य (hṛṣṭasya) - of the excited one, of him who was joyful/agitated

• रेतः (retaḥ) - semen, seed, fluid

• च (ca) - and, also

• स्कन्द (skanda) - flowed, was discharged

• तत् (tat) - that, it

• ऋषिः (ṛṣiḥ) - sage, seer

• द्रोणः (droṇaḥ) - Droṇa

• आदधे (ādadhe) - received, held, took

Words meanings and morphology

तस्याम् (tasyām) - in her, to her, for her

(pronoun)

Locative, feminine, singular of tad

tad - that, she, it

संसक्तमनसः (saṁsaktamanasaḥ) - of one whose mind is attached, of one with an engrossed mind

(adjective)

Genitive, masculine, singular of saṃsaktamanas

saṁsaktamanas - one whose mind is attached/engrossed

Compound type : bahuvrīhi (saṃsakta+manas)

• saṃsakta – attached, engrossed, connected
  adjective (masculine)
  Past Passive Participle
  Derived from verb root sañj (सञ्ज्) with prefix sam (सम्)
  Prefix: sam
  Root: sañj (class 1)
• manas – mind, intellect, thought
  noun (neuter)
  Root: man

कौमारब्रह्मचारिणः (kaumārabrahmacāriṇaḥ) - of a celibate (brahmacārin) from boyhood

(noun)

Genitive, masculine, singular of kaumārabrahmacārin

kaumārabrahmacārin - one who observes celibacy from boyhood

Compound type : tatpuruṣa (kaumāra+brahmacārin)

• kaumāra – relating to boyhood, youthful
  adjective (masculine)
  Derived from kumāra (boy)
• brahmacārin – one who observes religious student life, celibate (brahmacārin)
  noun (masculine)
  Derived from brahman (ब्रह्मन्) + car (चर्) + ṇini
  Root: car (class 1)

हृष्टस्य (hṛṣṭasya) - of the excited one, of him who was joyful/agitated

(adjective)

Genitive, masculine, singular of hṛṣṭa

hṛṣṭa - excited, joyful, agitated, thrilled

Past Passive Participle

Derived from verb root hṛṣ (हृष्)

Root: hṛṣ (class 4)

रेतः (retaḥ) - semen, seed, fluid

(noun)

Nominative, neuter, singular of retas

retas - semen, seed, fluid, essence

Root: rī

च (ca) - and, also

(indeclinable)

स्कन्द (skanda) - flowed, was discharged

(verb)

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

Root: skand (class 1)

तत् (tat) - that, it

(pronoun)

Accusative, neuter, singular of tad

tad - that, it

ऋषिः (ṛṣiḥ) - sage, seer

(noun)

Nominative, masculine, singular of ṛṣi

ṛṣi - sage, seer, inspired poet

द्रोणः (droṇaḥ) - Droṇa

(proper noun)

Nominative, masculine, singular of droṇa

droṇa - Droṇa (a name)

आदधे (ādadhe) - received, held, took

(verb)

3rd person , singular, middle, past perfect (liṭ) of dhā

Prefix: ā

Root: dhā (class 3)