महाभारतः mahābhārataḥ - book-5, chapter-194, verse-17

स्थविरोऽस्मि कुरुश्रेष्ठ मन्दप्राणविचेष्टितः ।
अस्त्राग्निना निर्दहेयं पाण्डवानामनीकिनीम् ॥१७॥

17. sthaviro'smi kuruśreṣṭha mandaprāṇaviceṣṭitaḥ ,
astrāgninā nirdaheyaṁ pāṇḍavānāmanīkinīm.

17. sthaviraḥ asmi kurūśreṣṭha mandaprāṇaviceṣṭitaḥ
astrāgninā nirdaheyam pāṇḍavānām anīkinīm

17. kurūśreṣṭha,
aham sthaviraḥ asmi,
mandaprāṇaviceṣṭitaḥ api.
astrāgninā pāṇḍavānām anīkinīm nirdaheyam.

17. O best of Kurus, I am old, and my vital activities are diminished. Yet, I could consume the army of the Pāṇḍavas with the fire of my weapons.

Words meanings summery:

• स्थविरः (sthaviraḥ) - old, aged, venerable

• अस्मि (asmi) - I am

• कुरूश्रेष्ठ (kurūśreṣṭha) - O Duryodhana (O best among the Kurus)

• मन्दप्राणविचेष्टितः (mandaprāṇaviceṣṭitaḥ) - one whose vital activities are slow or diminished

• अस्त्राग्निना (astrāgninā) - by the fire of weapons

• निर्दहेयम् (nirdaheyam) - I might burn up, I could consume

• पाण्डवानाम् (pāṇḍavānām) - of the Pāṇḍavas

• अनीकिनीम् (anīkinīm) - army, host of warriors

Words meanings and morphology

स्थविरः (sthaviraḥ) - old, aged, venerable

(adjective)

Nominative, masculine, singular of sthavira

sthavira - old, aged, ancient, firm

अस्मि (asmi) - I am

(verb)

1st person , singular, active, present (laṭ) of as

Root: as (class 2)

कुरूश्रेष्ठ (kurūśreṣṭha) - O Duryodhana (O best among the Kurus)

(noun)

Vocative, masculine, singular of kurūśreṣṭha

kurūśreṣṭha - best of the Kurus

Compound type : tatpuruṣa (kuru+śreṣṭha)

• kuru – Kuru (an ancient king, or his descendants)
  proper noun (masculine)
• śreṣṭha – best, most excellent, chief
  adjective (masculine)

मन्दप्राणविचेष्टितः (mandaprāṇaviceṣṭitaḥ) - one whose vital activities are slow or diminished

(adjective)

Nominative, masculine, singular of mandaprāṇaviceṣṭita

mandaprāṇaviceṣṭita - having slow vital activities, with diminished life force

Compound type : bahuvrīhi (manda+prāṇa+viceṣṭita)

• manda – slow, dull, sluggish, diminished
  adjective (masculine)
• prāṇa – vital breath, life force, vital air
  noun (masculine)
• viceṣṭita – stirred, moved, acted upon, activity
  adjective (neuter)
  Past Passive Participle
  Derived from root 'ceṣṭ' with prefix 'vi'
  Prefix: vi
  Root: ceṣṭ (class 1)

अस्त्राग्निना (astrāgninā) - by the fire of weapons

(noun)

Instrumental, masculine, singular of astrāgni

astrāgni - fire of weapons

Compound type : tatpuruṣa (astra+agni)

• astra – weapon, missile, projectile
  noun (neuter)
• agni – fire, flame
  noun (masculine)

निर्दहेयम् (nirdaheyam) - I might burn up, I could consume

(verb)

1st person , singular, active, optative (vidhiliṅ) of dah

Prefix: nir

Root: dah (class 1)

पाण्डवानाम् (pāṇḍavānām) - of the Pāṇḍavas

(proper noun)

Genitive, masculine, plural of pāṇḍava

pāṇḍava - descendant of Pāṇḍu, a Pāṇḍava

Taddhita derivation from Pāṇḍu

अनीकिनीम् (anīkinīm) - army, host of warriors

(noun)

Accusative, feminine, singular of anīkinī

anīkinī - army, military host (specifically 21,870 elephants, 21,870 chariots, 65,610 horses, and 109,350 foot soldiers)