योगवासिष्ठः yogavāsiṣṭhaḥ - book-4, chapter-44, verse-47

नानाचारसमाचारं गन्धर्वनगरे यथा ।
तासां स्वर्गापवर्गार्थं धर्मकामार्थसिद्धये ॥ ४७ ॥

nānācārasamācāraṃ gandharvanagare yathā ,
tāsāṃ svargāpavargārthaṃ dharmakāmārthasiddhaye 47

47. nānā-ācāra-samācāram gandharva-nagare yathā tāsām
svarga-apavarga-artham dharma-kāma-artha-siddhaye

47. tāsām svarga-apavarga-artham dharma-kāma-artha-siddhaye
nānā-ācāra-samācāram gandharva-nagare yathā

47. For those [beings], for the sake of heaven and final liberation (mokṣa), and for the accomplishment of righteousness (dharma), pleasure, and material prosperity, [he fashioned] diverse customs and practices, just like in an illusory city (gandharvanagara).

Words meanings summery:

• नाना-आचार-समाचारम् (nānā-ācāra-samācāram) - having diverse customs and practices

• गन्धर्व-नगरे (gandharva-nagare) - in a city of Gandharvas (celestial musicians), in an illusory city

• यथा (yathā) - as, just as, in which way

• तासाम् (tāsām) - referring to 'prajāḥ' (beings) from the previous verse (for them, of them)

• स्वर्ग-अपवर्ग-अर्थम् (svarga-apavarga-artham) - for the purpose of heaven and liberation (mokṣa)

• धर्म-काम-अर्थ-सिद्धये (dharma-kāma-artha-siddhaye) - for the achievement of righteousness (dharma), pleasure, and wealth

Words meanings and morphology

नाना-आचार-समाचारम् (nānā-ācāra-samācāram) - having diverse customs and practices

(adjective)

Accusative, neuter, singular of nānā-ācāra-samācāra

nānā-ācāra-samācāra - diverse customs and practices

Compound type : dvandva-tatpuruṣa (implied) (nānā+ācāra+samācāra)

• nānā – various, diverse, manifold
  indeclinable
• ācāra – conduct, custom, practice, tradition
  noun (masculine)
  from root car with prefix ā
  Prefix: ā
  Root: car (class 1)
• samācāra – custom, usage, practice, conduct
  noun (masculine)
  from root car with prefixes sam + ā
  Prefixes: sam+ā
  Root: car (class 1)

Note: Functions adverbially or as an adjective to an implied neuter singular noun.

गन्धर्व-नगरे (gandharva-nagare) - in a city of Gandharvas (celestial musicians), in an illusory city

(noun)

Locative, neuter, singular of gandharva-nagara

gandharva-nagara - city of Gandharvas; a phantom city, an illusory city (often used as simile)

Compound type : ṣaṣṭhī-tatpuruṣa (gandharva+nagara)

• gandharva – celestial musician
  noun (masculine)
• nagara – city, town
  noun (neuter)

यथा (yathā) - as, just as, in which way

(indeclinable)

तासाम् (tāsām) - referring to 'prajāḥ' (beings) from the previous verse (for them, of them)

(pronoun)

Genitive, feminine, plural of tad

tad - that, those

Note: Used here in the sense of dative, 'for them'.

स्वर्ग-अपवर्ग-अर्थम् (svarga-apavarga-artham) - for the purpose of heaven and liberation (mokṣa)

(noun)

Accusative, masculine, singular of svarga-apavarga-artha

svarga-apavarga-artha - purpose of heaven and liberation

Compound type : dvandva-tatpuruṣa (svarga+apavarga+artha)

• svarga – heaven, paradise
  noun (masculine)
• apavarga – liberation, final emancipation (mokṣa)
  noun (masculine)
  from root vṛj with prefix apa
  Prefix: apa
  Root: vṛj (class 1)
• artha – purpose, aim, meaning, wealth
  noun (masculine)

Note: Used adverbially.

धर्म-काम-अर्थ-सिद्धये (dharma-kāma-artha-siddhaye) - for the achievement of righteousness (dharma), pleasure, and wealth

(noun)

Dative, feminine, singular of dharma-kāma-artha-siddhi

dharma-kāma-artha-siddhi - achievement of the three aims of human life: dharma, kāma, and artha

Compound type : dvandva-tatpuruṣa (dharma+kāma+artha+siddhi)

• dharma – natural law, constitution, righteousness, duty
  noun (masculine)
  Root: dhṛ (class 1)
• kāma – desire, pleasure, love
  noun (masculine)
  Root: kam (class 1)
• artha – wealth, prosperity, purpose, meaning
  noun (masculine)
• siddhi – achievement, success, accomplishment, perfection
  noun (feminine)
  from root sidh
  Root: sidh (class 1)