योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-12, verse-20

प्राकृताचारसंप्राप्ते कुर्वन्तः कर्म केवलम् ।
स्थिता विगतसंरम्भमपरा इव मेरवः ॥ २० ॥

prākṛtācārasaṃprāpte kurvantaḥ karma kevalam ,
sthitā vigatasaṃrambhamaparā iva meravaḥ 20

20. prākṛtācārasamprāpte kurvantaḥ karma kevalam
sthitāḥ vigatasaṃrambham aparāḥ iva meravaḥ

20. prākṛtācārasamprāpte kevalam karma kurvantaḥ
vigatasaṃrambham sthitāḥ aparāḥ meravaḥ iva

20. Merely performing their duties when customary actions were called for, they remained like other mountains, completely devoid of agitation or excitement.

Words meanings summery:

• प्राकृताचारसम्प्राप्ते (prākṛtācārasamprāpte) - when customary actions were called for (when ordinary customs were reached, when natural conduct was due)

• कुर्वन्तः (kurvantaḥ) - doing, performing

• कर्म (karma) - their appointed duties (action, duty, work (karma))

• केवलम् (kevalam) - merely, solely, only

• स्थिताः (sthitāḥ) - they stood, they remained, firm

• विगतसंरम्भम् (vigatasaṁrambham) - without agitation, devoid of excitement/zeal

• अपराः (aparāḥ) - other, different

• इव (iva) - like, as, as if

• मेरवः (meravaḥ) - mountains (like Mount Meru)

Words meanings and morphology

प्राकृताचारसम्प्राप्ते (prākṛtācārasamprāpte) - when customary actions were called for (when ordinary customs were reached, when natural conduct was due)

(adjective)

Locative, masculine, singular of prākṛtācārasamprāpta

prākṛtācārasamprāpta - attainment of natural customs or conduct

Compound type : tatpuruṣa (prākṛta+ācāra+samprāpta)

• prākṛta – natural, ordinary, common, vulgar
  adjective (masculine)
• ācāra – conduct, custom, practice, tradition
  noun (masculine)
  Prefix: ā
  Root: car (class 1)
• samprāpta – attained, arrived, due, happened
  past passive participle (masculine)
  Past Passive Participle
  from root āp with prefix sam-pra
  Prefixes: sam+pra
  Root: āp (class 5)

Note: Referring to a situation or time where natural/customary actions are called for.

कुर्वन्तः (kurvantaḥ) - doing, performing

(present active participle)

Note: Modifies the implied subject 'they'.

कर्म (karma) - their appointed duties (action, duty, work (karma))

(noun)

Accusative, neuter, singular of karman

karman - action, deed, work, duty, religious rite, the law of cause and effect (karma)

Root: kṛ (class 8)

केवलम् (kevalam) - merely, solely, only

(indeclinable)

स्थिताः (sthitāḥ) - they stood, they remained, firm

(past passive participle)

विगतसंरम्भम् (vigatasaṁrambham) - without agitation, devoid of excitement/zeal

(indeclinable)

Compound type : bahuvrīhi (vigata+saṃrambha)

• vigata – departed, gone, removed, disappeared
  past passive participle (masculine)
  Past Passive Participle
  from root gam with prefix vi
  Prefix: vi
  Root: gam (class 1)
• saṃrambha – agitation, excitement, vehemence, zeal, wrath
  noun (masculine)
  Prefix: sam
  Root: rabh (class 1)

Note: Adverbial usage, literally 'having departed agitation'.

अपराः (aparāḥ) - other, different

(adjective)

Nominative, masculine, plural of apara

apara - other, another, different, later, subsequent

Note: Agrees with 'meravaḥ'.

इव (iva) - like, as, as if

(indeclinable)

मेरवः (meravaḥ) - mountains (like Mount Meru)

(noun)

Nominative, masculine, plural of meru

meru - a mountain, the mythical golden mountain Meru, the central world-mountain