योगवासिष्ठः yogavāsiṣṭhaḥ - book-4, chapter-23, verse-2

तस्येयं भोगमोक्षार्थं तज्ज्ञस्योपवनोपमा ।
सुखायैव न दुःखाय स्वशरीरमहापुरी ॥ २ ॥

tasyeyaṃ bhogamokṣārthaṃ tajjñasyopavanopamā ,
sukhāyaiva na duḥkhāya svaśarīramahāpurī 2

2. tasya iyam bhoga-mokṣa-artham tat-jñasya upavana-upamā
| sukhāya eva na duḥkhāya sva-śarīra-mahāpurī ||

2. tat-jñasya tasya iyam sva-śarīra-mahāpurī bhoga-mokṣa-artham upavana-upamā (asti).
sukhāya eva (bhavati),
duḥkhāya na (bhavati).

2. For the one who knows its true nature, this great city, his own body, is like a pleasure garden, serving for both worldly enjoyment (bhoga) and ultimate liberation (mokṣa). It is solely for happiness, not for sorrow.

Words meanings summery:

• तस्य (tasya) - of the knower, referring to the one who knows (of him, of that)

• इयम् (iyam) - this (city/body) (this, she)

• भोग-मोक्ष-अर्थम् (bhoga-mokṣa-artham) - for worldly enjoyment (bhoga) and ultimate liberation (mokṣa) (for the purpose of enjoyment and liberation)

• तत्-ज्ञस्य (tat-jñasya) - of the one who knows its true nature (i.e., the nature of the body/world) (of the knower of that)

• उपवन-उपमा (upavana-upamā) - like a pleasure garden (like a garden, comparable to a garden)

• सुखाय (sukhāya) - for happiness (for happiness, for joy)

• एव (eva) - solely, only (only, just, indeed)

• न (na) - not (not, no)

• दुःखाय (duḥkhāya) - for sorrow (for sorrow, for pain)

• स्व-शरीर-महापुरी (sva-śarīra-mahāpurī) - this great city, his own body (the great city of one's own body)

Words meanings and morphology

तस्य (tasya) - of the knower, referring to the one who knows (of him, of that)

(pronoun)

Genitive, masculine, singular of tad

tad - that, he, she, it

Note: Refers to 'tat-jñasya'

इयम् (iyam) - this (city/body) (this, she)

(pronoun)

Nominative, feminine, singular of idam

idam - this, she, it

Note: Refers to 'mahāpurī'

भोग-मोक्ष-अर्थम् (bhoga-mokṣa-artham) - for worldly enjoyment (bhoga) and ultimate liberation (mokṣa) (for the purpose of enjoyment and liberation)

(noun)

Accusative, neuter, singular of bhoga-mokṣa-artha

bhoga-mokṣa-artha - for the purpose of enjoyment and liberation

Compound type : tatpuruṣa (bhoga+mokṣa+artha)

• bhoga – enjoyment, experience, worldly pleasure
  noun (masculine)
  Root: bhuj (class 7)
• mokṣa – liberation, emancipation, freedom
  noun (masculine)
  Root: muc (class 6)
• artha – purpose, meaning, wealth, object
  noun (masculine)

Note: Used adverbially to mean 'for the sake of', 'for the purpose of'

तत्-ज्ञस्य (tat-jñasya) - of the one who knows its true nature (i.e., the nature of the body/world) (of the knower of that)

(noun)

Genitive, masculine, singular of tat-jña

tat-jña - knower of that

Compound type : tatpuruṣa (tad+jña)

• tad – that
  pronoun (neuter)
• jña – knower, understanding
  noun (masculine)
  Derived from root jñā (to know)
  Root: jñā (class 9)

उपवन-उपमा (upavana-upamā) - like a pleasure garden (like a garden, comparable to a garden)

(noun)

Nominative, feminine, singular of upavana-upamā

upavana-upamā - comparable to a garden

Compound type : tatpuruṣa (upavana+upamā)

• upavana – garden, grove, pleasure garden
  noun (neuter)
  Prefix: upa
• upamā – comparison, simile, resemblance
  noun (feminine)
  Derived from upa-mā (to compare)
  Prefix: upa
  Root: mā (class 3)

Note: Predicative nominative, describing the 'mahāpurī'

सुखाय (sukhāya) - for happiness (for happiness, for joy)

(noun)

Dative, neuter, singular of sukha

sukha - happiness, ease, comfort, pleasure

एव (eva) - solely, only (only, just, indeed)

(indeclinable)

न (na) - not (not, no)

(indeclinable)

दुःखाय (duḥkhāya) - for sorrow (for sorrow, for pain)

(noun)

Dative, neuter, singular of duḥkha

duḥkha - sorrow, pain, suffering, misery

स्व-शरीर-महापुरी (sva-śarīra-mahāpurī) - this great city, his own body (the great city of one's own body)

(noun)

Nominative, feminine, singular of sva-śarīra-mahāpurī

sva-śarīra-mahāpurī - the great city which is one's own body

Compound type : karmadhāraya (sva+śarīra+mahā+purī)

• sva – one's own, self
  pronoun (neuter)
• śarīra – body, corporeal frame
  noun (neuter)
  Root: śṝ (class 9)
• mahā – great, large, mighty
  adjective (feminine)
• purī – city, town, stronghold
  noun (feminine)

Note: The subject of the sentence, implied verb 'asti' (is)