महाभारतः mahābhārataḥ - book-1, chapter-123, verse-65

अर्जुनेनैवमुक्तस्तु द्रोणो हृष्टतनूरुहः ।
मुञ्चस्वेत्यब्रवीत्पार्थं स मुमोचाविचारयन् ॥६५॥

65. arjunenaivamuktastu droṇo hṛṣṭatanūruhaḥ ,
muñcasvetyabravītpārthaṁ sa mumocāvicārayan.

65. arjunena eva uktaḥ tu droṇaḥ hṛṣṭatanūruhaḥ
muñcasva iti abravīt pārtham saḥ mumoca avicārayan

65. When Arjuna had spoken thus, Drona, with his hair standing on end (from joy), told Arjuna (Pārtha), "Release it!" And he released it without a moment's thought.

Words meanings summery:

• अर्जुनेन (arjunena) - by Arjuna

• एव (eva) - indeed, just, only, thus

• उक्तः (uktaḥ) - said, spoken, addressed

• तु (tu) - but, indeed

• द्रोणः (droṇaḥ) - Drona (proper name)

• हृष्टतनूरुहः (hṛṣṭatanūruhaḥ) - whose body-hair stood on end (from joy/excitement)

• मुञ्चस्व (muñcasva) - release!, let go!

• इति (iti) - thus, so (marks direct speech)

• अब्रवीत् (abravīt) - he said, he spoke

• पार्थम् (pārtham) - Arjuna (son of Pṛthā)

• सः (saḥ) - he (Arjuna) (he)

• मुमोच (mumoca) - he released, he let go

• अविचारयन् (avicārayan) - without considering, without thinking, without hesitation

Words meanings and morphology

अर्जुनेन (arjunena) - by Arjuna

(proper noun)

Instrumental, masculine, singular of arjuna

arjuna - Arjuna (proper name, one of the Pāṇḍavas)

एव (eva) - indeed, just, only, thus

(indeclinable)

उक्तः (uktaḥ) - said, spoken, addressed

(adjective)

Nominative, masculine, singular of ukta

ukta - said, spoken, declared

Past Passive Participle

From root vac, irregularly formed

Root: vac (class 2)

तु (tu) - but, indeed

(indeclinable)

द्रोणः (droṇaḥ) - Drona (proper name)

(proper noun)

Nominative, masculine, singular of droṇa

droṇa - Drona (teacher of the Pāṇḍavas and Kauravas)

हृष्टतनूरुहः (hṛṣṭatanūruhaḥ) - whose body-hair stood on end (from joy/excitement)

(adjective)

Nominative, masculine, singular of hṛṣṭatanūruha

hṛṣṭatanūruha - with hair standing on end (from joy or excitement)

Compound type : bahuvrīhi (hṛṣṭa+tanūruha)

• hṛṣṭa – gladdened, thrilled, excited
  adjective (masculine)
  Past Passive Participle
  Root: hṛṣ (class 1)
• tanūruha – body-hair, hair
  noun (masculine)

मुञ्चस्व (muñcasva) - release!, let go!

(verb)

2nd person , singular, middle, imperative (loṭ) of muñc

Present stem of muc

Root muc, sixth conjugation, present stem muñc

Root: muc (class 6)

इति (iti) - thus, so (marks direct speech)

(indeclinable)

अब्रवीत् (abravīt) - he said, he spoke

(verb)

3rd person , singular, active, imperfect (laṅ) of brū

Root: brū (class 2)

पार्थम् (pārtham) - Arjuna (son of Pṛthā)

(proper noun)

Accusative, masculine, singular of pārtha

pārtha - son of Pṛthā (Kuntī), a name for Arjuna

Derived from Pṛthā with aṇ suffix

सः (saḥ) - he (Arjuna) (he)

(pronoun)

Nominative, masculine, singular of tad

tad - that, he, she, it

मुमोच (mumoca) - he released, he let go

(verb)

3rd person , singular, active, perfect (lit) of muc

Root: muc (class 6)

अविचारयन् (avicārayan) - without considering, without thinking, without hesitation

(adjective)

Nominative, masculine, singular of avicārayat

avicārayat - not thinking, unhesitating

Present Active Participle (negative)

From root car (to move, think) with vi (prefix) and causative -āy, then negation 'a-'.

Prefixes: a+vi

Root: car (class 1)