महाभारतः mahābhārataḥ - book-8, chapter-12, verse-23

तमामन्त्र्यैकमनसा केशवो द्रौणिमब्रवीत् ।
अश्वत्थामन्स्थिरो भूत्वा प्रहराशु सहस्व च ॥२३॥

23. tamāmantryaikamanasā keśavo drauṇimabravīt ,
aśvatthāmansthiro bhūtvā praharāśu sahasva ca.

23. tam āmantrya ekamanasā keśavaḥ drauṇim abravīt
aśvatthāman sthiraḥ bhūtvā prahara āśu sahasva ca

23. keśavaḥ tam drauṇim ekamanasā āmantrya abravīt
aśvatthāman sthiraḥ bhūtvā āśu prahara ca sahasva

23. Having addressed him (Aśvatthāmā) with a focused mind, Keśava (Krishna) said to Droṇa's son: 'O Aśvatthāmā, remain resolute, strike swiftly, and endure!'

Words meanings summery:

• तम् (tam) - him, that (masculine singular accusative)

• आमन्त्र्य (āmantrya) - having addressed, having invited

• एकमनसा (ekamanasā) - with a single mind, with concentrated attention

• केशवः (keśavaḥ) - Keśava (an epithet of Krishna)

• द्रौणिम् (drauṇim) - Droṇa's son (Aśvatthāmā)

• अब्रवीत् (abravīt) - said, spoke

• अश्वत्थामन् (aśvatthāman) - O Aśvatthāmā!

• स्थिरः (sthiraḥ) - firm, steady, resolute

• भूत्वा (bhūtvā) - having become, having been

• प्रहर (prahara) - strike, attack

• आशु (āśu) - quickly, swiftly

• सहस्व (sahasva) - endure, tolerate

• च (ca) - and

Words meanings and morphology

तम् (tam) - him, that (masculine singular accusative)

(pronoun)

Accusative, masculine, singular of tad

tad - that, he, she, it

आमन्त्र्य (āmantrya) - having addressed, having invited

(indeclinable)

Absolutive (gerund)

Prefix: ā

Root: mantr (class 10)

एकमनसा (ekamanasā) - with a single mind, with concentrated attention

(adjective)

Instrumental, neuter, singular of ekamanas

ekamanas - single-minded, concentrated, harmonious

Compound type : bahuvrīhi (eka+manas)

• eka – one, single, unique
  numeral
• manas – mind, intellect, thought
  noun (neuter)

केशवः (keśavaḥ) - Keśava (an epithet of Krishna)

(proper noun)

Nominative, masculine, singular of keśava

keśava - Keśava (epithet of Krishna, 'having fine hair' or 'slayer of Keśī demon')

द्रौणिम् (drauṇim) - Droṇa's son (Aśvatthāmā)

(proper noun)

Accusative, masculine, singular of drauṇi

drauṇi - son of Droṇa (Aśvatthāmā)

अब्रवीत् (abravīt) - said, spoke

(verb)

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

Root: bru (class 2)

अश्वत्थामन् (aśvatthāman) - O Aśvatthāmā!

(proper noun)

Vocative, masculine, singular of aśvatthāman

aśvatthāman - Aśvatthāmā (son of Droṇa)

स्थिरः (sthiraḥ) - firm, steady, resolute

(adjective)

Nominative, masculine, singular of sthira

sthira - firm, steady, stable, resolute

From root sthā (to stand)

Root: sthā

भूत्वा (bhūtvā) - having become, having been

(indeclinable)

Absolutive (gerund)

Root: bhū (class 1)

प्रहर (prahara) - strike, attack

(verb)

2nd person , singular, active, imperative (loṭ) of prahara

Prefix: pra

Root: hṛ (class 1)

आशु (āśu) - quickly, swiftly

(indeclinable)

सहस्व (sahasva) - endure, tolerate

(verb)

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

Root: sah (class 1)

च (ca) - and

(indeclinable)