योगवासिष्ठः yogavāsiṣṭhaḥ - book-4, chapter-16, verse-19

बभूवतुः पितापुत्रौ तावथान्योन्यशोभितौ ।
निशावसानमुदितावर्कपद्माकराविव ॥ १९ ॥

babhūvatuḥ pitāputrau tāvathānyonyaśobhitau ,
niśāvasānamuditāvarkapadmākarāviva 19

19. babhūvatuḥ pitāputrau tau atha anyonyaśobhitau
niśāvasānamuditārkapadmākarau iva

19. atha tau pitāputrau anyonyaśobhitau
niśāvasānamuditārkapadmākarau iva babhūvatuḥ

19. Then, those two, the father and son, mutually adorned each other, like the sun and a lotus lake that shine forth at the end of night.

Words meanings summery:

• बभूवतुः (babhūvatuḥ) - they two became, they two were

• पितापुत्रौ (pitāputrau) - father and son

• तौ (tau) - (the father and son) (those two)

• अथ (atha) - then, next, now

• अन्योन्यशोभितौ (anyonyaśobhitau) - mutually adorned, mutually shining

• निशावसानमुदितार्कपद्माकरौ (niśāvasānamuditārkapadmākarau) - (like) the sun and a lotus pond blooming at dawn ((like) the sun risen at the end of night and lotus lakes)

• इव (iva) - like, as if

Words meanings and morphology

बभूवतुः (babhūvatuḥ) - they two became, they two were

(verb)

3rd person , dual, active, perfect (liṭ) of bhū

Root: bhū (class 1)

पितापुत्रौ (pitāputrau) - father and son

(noun)

Nominative, masculine, dual of pitāputra

pitāputra - father and son

Dvandva compound.

Compound type : dvandva (pitṛ+putra)

• pitṛ – father
  noun (masculine)
• putra – son
  noun (masculine)

तौ (tau) - (the father and son) (those two)

(pronoun)

Nominative, masculine, dual of tad

tad - that, those

Demonstrative pronoun.

Note: Refers to pitāputrau.

अथ (atha) - then, next, now

(indeclinable)

अन्योन्यशोभितौ (anyonyaśobhitau) - mutually adorned, mutually shining

(adjective)

Nominative, masculine, dual of anyonyaśobhita

anyonyaśobhita - mutually adorned, mutually beautiful

Past Passive Participle (from śobhita)

Masculine nominative dual of compound.

Compound type : karmadhāraya (anyonya+śobhita)

• anyonya – each other, mutual
  pronoun (masculine)
• śobhita – adorned, beautiful, shining
  adjective (masculine)
  Past Passive Participle
  From root śubh (to shine, be beautiful).
  Root: śubh (class 1)

Note: Agrees with pitāputrau.

निशावसानमुदितार्कपद्माकरौ (niśāvasānamuditārkapadmākarau) - (like) the sun and a lotus pond blooming at dawn ((like) the sun risen at the end of night and lotus lakes)

(noun)

Nominative, masculine, dual of niśāvasānamuditārkapadmākara

niśāvasānamuditārkapadmākara - the sun that has risen at the end of night and the lotus lake

Long Dvandva compound. Dual form.

Compound type : dvandva (niśāvasānamuditārka+padmākara)

• niśāvasānamuditārka – the sun risen at the end of night
  noun (masculine)
  Compound. Sun (arka) qualified by 'risen at the end of night'.
• padmākara – lotus lake, pond full of lotuses
  noun (masculine)
  Compound.

Note: This entire long compound functions as a simile.

इव (iva) - like, as if

(indeclinable)

Particle of comparison.