महाभारतः mahābhārataḥ - book-12, chapter-128, verse-29

न शङ्खलिखितां वृत्तिं शक्यमास्थाय जीवितुम् ।
विशेषतः कुरुश्रेष्ठ प्रजापालनमीप्सता ॥२९॥

29. na śaṅkhalikhitāṁ vṛttiṁ śakyamāsthāya jīvitum ,
viśeṣataḥ kuruśreṣṭha prajāpālanamīpsatā.

29. na śaṅkhalikhitām vṛttim śakyam āsthāya jīvitum
viśeṣataḥ kuruśreṣṭha prajāpālanam īpsatā

29. kuruśreṣṭha prajāpālanam īpsatā śaṅkhalikhitām
vṛttim āsthāya jīvitum na śakyam viśeṣataḥ

29. O best among the Kurus, it is not possible to sustain a livelihood by rigidly adhering to a prescribed (literally, 'conch-written') course of action, especially for one who desires to protect the citizens.

Words meanings summery:

• न (na) - not, no

• शङ्खलिखिताम् (śaṅkhalikhitām) - rigidly fixed, unalterable (conch-written, fixed, prescribed)

• वृत्तिम् (vṛttim) - livelihood, conduct, course of action, way

• शक्यम् (śakyam) - possible, able, capable

• आस्थाय (āsthāya) - having resorted to, having adopted, having taken up

• जीवितुम् (jīvitum) - to live, to subsist

• विशेषतः (viśeṣataḥ) - especially, particularly

• कुरुश्रेष्ठ (kuruśreṣṭha) - O best of Kurus, O noblest of Kurus

• प्रजापालनम् (prajāpālanam) - protection of subjects/citizens

• ईप्सता (īpsatā) - by one desiring, by one wishing to obtain

Words meanings and morphology

न (na) - not, no

(indeclinable)

शङ्खलिखिताम् (śaṅkhalikhitām) - rigidly fixed, unalterable (conch-written, fixed, prescribed)

(adjective)

Accusative, feminine, singular of śaṅkhalikhita

śaṅkhalikhita - conch-written, fixed, determined, prescribed

Compound type : tatpuruṣa (śaṅkha+likhita)

• śaṅkha – conch, shell
  noun (masculine)
• likhita – written, inscribed, drawn
  adjective (masculine)
  Past Passive Participle
  from root likh (to write)
  Root: likh (class 6)

वृत्तिम् (vṛttim) - livelihood, conduct, course of action, way

(noun)

Accusative, feminine, singular of vṛtti

vṛtti - livelihood, conduct, state, existence, course of action, commentary

शक्यम् (śakyam) - possible, able, capable

(adjective)

Nominative, neuter, singular of śakya

śakya - possible, able, practicable, capable of being done

Gerundive

from root śak (to be able)

Root: śak (class 5)

आस्थाय (āsthāya) - having resorted to, having adopted, having taken up

(indeclinable)

Absolutive (Gerund)

from root sthā (to stand) with prefix ā

Prefix: ā

Root: sthā (class 1)

जीवितुम् (jīvitum) - to live, to subsist

(verb)

Infinitive

from root jīv (to live)

Root: jīv (class 1)

विशेषतः (viśeṣataḥ) - especially, particularly

(indeclinable)

From viśeṣa with tas suffix

कुरुश्रेष्ठ (kuruśreṣṭha) - O best of Kurus, O noblest of Kurus

(proper noun)

Vocative, masculine, singular of kuruśreṣṭha

kuruśreṣṭha - best of Kurus, noblest among Kurus

Compound type : tatpuruṣa (kuru+śreṣṭha)

• kuru – a member of the Kuru dynasty, name of an ancient tribe/kingdom
  proper noun (masculine)
• śreṣṭha – best, most excellent, chief
  adjective (masculine)

प्रजापालनम् (prajāpālanam) - protection of subjects/citizens

(noun)

Accusative, neuter, singular of prajāpālana

prajāpālana - protection of subjects, governing the people, administration of subjects

Compound type : tatpuruṣa (prajā+pālana)

• prajā – subjects, progeny, people, creatures
  noun (feminine)
• pālana – protecting, guarding, preserving, rearing
  noun (neuter)
  verbal noun
  from root pā (to protect)
  Root: pā (class 2)

ईप्सता (īpsatā) - by one desiring, by one wishing to obtain

(participle)

Instrumental, masculine, singular of īpsat

īpsat - desiring, wishing to obtain, longing for

Present Active Participle (Desiderative)

from desiderative stem of root āp (to obtain)

Root: āp (class 5)