योगवासिष्ठः yogavāsiṣṭhaḥ - book-4, chapter-56, verse-15

अस्थिराश्चेज्जगद्भावास्तदप्यास्था न शोभते ।
पयःफेनास्थिरस्यान्ते दुःखमेषा ददाति ते ॥ १५ ॥

asthirāścejjagadbhāvāstadapyāsthā na śobhate ,
payaḥphenāsthirasyānte duḥkhameṣā dadāti te 15

15. asthirāḥ cet jagadbhāvāḥ tat api āsthā na śobhate
| payaḥphenāsthirasya ante duḥkham eṣā dadāti te ||

15. cet jagadbhāvāḥ asthirāḥ tat api āsthā na śobhate
eṣā payaḥphenāsthirasya ante te duḥkham dadāti

15. If the phenomena of the world are impermanent, then even attachment to them is not fitting. This attachment, which is as fleeting as the foam on water, ultimately brings you suffering.

Words meanings summery:

• अस्थिराः (asthirāḥ) - impermanent, unstable, fleeting

• चेत् (cet) - if, supposing that

• जगद्भावाः (jagadbhāvāḥ) - worldly phenomena, earthly existences

• तत् (tat) - therefore (then, therefore, that)

• अपि (api) - even (even, also, too)

• आस्था (āsthā) - attachment (attachment, reliance, faith, trust, reverence)

• न (na) - not (not, no)

• शोभते (śobhate) - is fitting, is appropriate (shines, appears beautiful, is fitting/appropriate)

• पयःफेनास्थिरस्य (payaḥphenāsthirasya) - of that which is fleeting like the foam on water (of that which is impermanent like foam on water)

• अन्ते (ante) - in the end, ultimately (in the end, finally)

• दुःखम् (duḥkham) - suffering (suffering, sorrow, misery)

• एषा (eṣā) - this (attachment - āsthā) (this (feminine))

• ददाति (dadāti) - gives, brings (gives)

• ते (te) - to you (to you (singular))

Words meanings and morphology

अस्थिराः (asthirāḥ) - impermanent, unstable, fleeting

(adjective)

Nominative, masculine, plural of asthira

asthira - impermanent, unstable, fleeting

From 'a' (negation) + 'sthira' (stable)

Compound type : avyayībhāva (a+sthira)

• a – not, un-
  indeclinable
  Negative prefix
• sthira – stable, firm, permanent
  adjective
  From root sthā- (to stand)
  Root: sthā (class 1)

चेत् (cet) - if, supposing that

(indeclinable)

Conditional particle

जगद्भावाः (jagadbhāvāḥ) - worldly phenomena, earthly existences

(noun)

Nominative, masculine, plural of jagadbhāva

jagadbhāva - worldly phenomena, earthly existences

Compound of 'jagat' and 'bhāva'

Compound type : tatpurusha (jagat+bhāva)

• jagat – world, universe
  noun (neuter)
  From root gam- (to go)
  Root: gam (class 1)
• bhāva – existence, state, condition, phenomenon
  noun (masculine)
  From root bhū- (to be, to become)
  Root: bhū (class 1)

तत् (tat) - therefore (then, therefore, that)

(indeclinable)

Demonstrative pronoun, also used as an indeclinable 'then/therefore'

अपि (api) - even (even, also, too)

(indeclinable)

Particle

आस्था (āsthā) - attachment (attachment, reliance, faith, trust, reverence)

(noun)

Nominative, feminine, singular of āsthā

āsthā - reliance, attachment, faith, trust, reverence

From 'ā' (upasarga) + root 'sthā' (to stand)

Prefix: ā

Root: sthā (class 1)

न (na) - not (not, no)

(indeclinable)

Negative particle

शोभते (śobhate) - is fitting, is appropriate (shines, appears beautiful, is fitting/appropriate)

(verb)

3rd person , singular, middle, present (laṭ) of śubh

Present Tense, Ātmanepada

Class 1 verb

Root: śubh (class 1)

पयःफेनास्थिरस्य (payaḥphenāsthirasya) - of that which is fleeting like the foam on water (of that which is impermanent like foam on water)

(adjective)

Genitive, masculine, singular of payaḥphenāsthira

payaḥphenāsthira - impermanent like the foam of water

Compound: payas (water) + phena (foam) + asthira (impermanent)

Compound type : karmadhāraya (payas+phena+asthira)

• payas – water, milk
  noun (neuter)
• phena – foam, froth
  noun (masculine)
• asthira – impermanent, unstable, fleeting
  adjective
  From 'a' (negation) + 'sthira' (stable)
  Root: sthā (class 1)

Note: The compound describes 'āsthā' implicitly, meaning 'of that which is as fleeting as foam on water'.

अन्ते (ante) - in the end, ultimately (in the end, finally)

(noun)

Locative, masculine, singular of anta

anta - end, limit, conclusion, vicinity

दुःखम् (duḥkham) - suffering (suffering, sorrow, misery)

(noun)

Accusative, neuter, singular of duḥkha

duḥkha - suffering, sorrow, pain, misery

एषा (eṣā) - this (attachment - āsthā) (this (feminine))

(pronoun)

Nominative, feminine, singular of etad

etad - this

Demonstrative pronoun

Note: Refers back to 'āsthā'.

ददाति (dadāti) - gives, brings (gives)

(verb)

3rd person , singular, active, present (laṭ) of dā

Present Tense, Parasmaipada

Class 3 verb (reduplicating)

Root: dā (class 3)

ते (te) - to you (to you (singular))

(pronoun)

Dative, singular of yuṣmad

yuṣmad - you

Second person pronoun

Note: Used as dative here.