महाभारतः mahābhārataḥ - book-15, chapter-9, verse-8

अप्रमादस्त्वया कार्यः सर्वथा कुरुनन्दन ।
अष्टाङ्गे राजशार्दूल राज्ये धर्मपुरस्कृते ॥८॥

8. apramādastvayā kāryaḥ sarvathā kurunandana ,
aṣṭāṅge rājaśārdūla rājye dharmapuraskṛte.

8. apramādaḥ tvayā kāryaḥ sarvathā kurunandana
aṣṭāṅge rājaśārdūla rājye dharmapuraskṛte

8. O delight of the Kurus, O tiger among kings, you must always exercise vigilance regarding the eight-limbed kingdom (rājya) which is based on natural law (dharma).

Words meanings summery:

• अप्रमादः (apramādaḥ) - vigilance (absence of error, non-negligence, vigilance, carefulness)

• त्वया (tvayā) - by you (Arjuna) (by you)

• कार्यः (kāryaḥ) - must be done (to be done, proper to be done, duty, action)

• सर्वथा (sarvathā) - always, in every way (in every way, by all means, always, completely)

• कुरुनन्दन (kurunandana) - O delight of the Kurus (referring to Arjuna) (O delight of the Kurus, O son of Kuru)

• अष्टाङ्गे (aṣṭāṅge) - in the eight-limbed (kingdom/state) (in the eight-limbed, pertaining to eight parts)

• राजशार्दूल (rājaśārdūla) - O tiger among kings (referring to Arjuna) (O tiger among kings, O best of kings)

• राज्ये (rājye) - in the kingdom (rājya) (in the kingdom, in the reign, in the state)

• धर्मपुरस्कृते (dharmapuraskṛte) - based on natural law (dharma) (based on dharma, honored by dharma, having dharma as its foremost)

Words meanings and morphology

अप्रमादः (apramādaḥ) - vigilance (absence of error, non-negligence, vigilance, carefulness)

(noun)

Nominative, masculine, singular of apramāda

apramāda - vigilance, carefulness, absence of error, non-negligence

Compound type : nañ-tatpuruṣa (a+pramāda)

• a – not, non-
  indeclinable
  negative prefix
• pramāda – negligence, error, carelessness
  noun (masculine)
  from pra + mad
  Prefix: pra
  Root: mad (class 4)

त्वया (tvayā) - by you (Arjuna) (by you)

(pronoun)

Instrumental, singular of yuṣmad

yuṣmad - you (pronoun)

कार्यः (kāryaḥ) - must be done (to be done, proper to be done, duty, action)

(adjective)

Nominative, masculine, singular of kārya

kārya - to be done, proper to be done, duty, action

Gerundive

From root kṛ (to do) + suffix -ya

Root: kṛ (class 8)

सर्वथा (sarvathā) - always, in every way (in every way, by all means, always, completely)

(indeclinable)

Derived from sarva (all) + thā (suffix)

कुरुनन्दन (kurunandana) - O delight of the Kurus (referring to Arjuna) (O delight of the Kurus, O son of Kuru)

(noun)

Vocative, masculine, singular of kurunandana

kurunandana - delight of the Kurus, son of Kuru

Compound type : ṣaṣṭhī-tatpuruṣa (kuru+nandana)

• kuru – name of an ancient king, his dynasty
  proper noun (masculine)
• nandana – son, delight, gladdening
  noun (masculine)
  From root nand (to rejoice)
  Root: nand (class 1)

अष्टाङ्गे (aṣṭāṅge) - in the eight-limbed (kingdom/state) (in the eight-limbed, pertaining to eight parts)

(adjective)

Locative, neuter, singular of aṣṭāṅga

aṣṭāṅga - having eight parts/limbs

Compound type : dvigu (aṣṭa+aṅga)

• aṣṭa – eight
  numeral
• aṅga – limb, part, constituent
  noun (neuter)

Note: modifies rājye

राजशार्दूल (rājaśārdūla) - O tiger among kings (referring to Arjuna) (O tiger among kings, O best of kings)

(noun)

Vocative, masculine, singular of rājaśārdūla

rājaśārdūla - tiger among kings, best of kings

Compound type : upamāna-pūrvapada-karmadhāraya (rājan+śārdūla)

• rājan – king, ruler
  noun (masculine)
• śārdūla – tiger
  noun (masculine)

राज्ये (rājye) - in the kingdom (rājya) (in the kingdom, in the reign, in the state)

(noun)

Locative, neuter, singular of rājya

rājya - kingdom, realm, government, sovereignty

From rājan (king) + -ya suffix

Root: rāj

धर्मपुरस्कृते (dharmapuraskṛte) - based on natural law (dharma) (based on dharma, honored by dharma, having dharma as its foremost)

(adjective)

Locative, neuter, singular of dharmapuraskṛta

dharmapuraskṛta - having dharma as its foremost, preceded by dharma, based on natural law

Compound type : bahuvrīhi (dharma+puraskṛta)

• dharma – natural law, righteousness, duty, constitution, intrinsic nature
  noun (masculine)
  Root: dhṛ (class 1)
• puraskṛta – honored, preceded by, appointed, made foremost
  adjective (neuter)
  Past Passive Participle
  From puras (before) + kṛ (to do)
  Prefix: puras
  Root: kṛ (class 8)