योगवासिष्ठः yogavāsiṣṭhaḥ - book-4, chapter-16, verse-15

पुरोऽभिवादयामास पितरं पावनाकृतिम् ।
प्रथमोल्लासितो मेघः स्तनितेनेव पर्वतम् ॥ १५ ॥

puro'bhivādayāmāsa pitaraṃ pāvanākṛtim ,
prathamollāsito meghaḥ staniteneva parvatam 15

15. puraḥ abhivādayāmāsa pitaram pāvanākṛtim
prathama-ullāsitaḥ meghaḥ stanitena iva parvatam

15. saḥ pāvanākṛtim pitaram puraḥ abhivādayāmāsa
prathama-ullāsitaḥ meghaḥ stanitena parvatam iva

15. He bowed before his father, who possessed a purifying form, just as a newly risen cloud salutes a mountain with its thunder.

Words meanings summery:

• पुरः (puraḥ) - before (in presence of) (in front, before, eastward)

• अभिवादयामास (abhivādayāmāsa) - he bowed (he saluted, he greeted, he bowed)

• पितरम् (pitaram) - father (father (accusative singular))

• पावनाकृतिम् (pāvanākṛtim) - who possessed a purifying form (of purifying form, whose form is pure (accusative singular))

• प्रथम-उल्लासितः (prathama-ullāsitaḥ) - newly risen (first expanded, first risen, newly appeared)

• मेघः (meghaḥ) - cloud

• स्तनितेन (stanitena) - with its thunder (with thunder, by the sound of thunder)

• इव (iva) - just as (like, as, as if)

• पर्वतम् (parvatam) - mountain (mountain (accusative singular))

Words meanings and morphology

पुरः (puraḥ) - before (in presence of) (in front, before, eastward)

(indeclinable)

अभिवादयामास (abhivādayāmāsa) - he bowed (he saluted, he greeted, he bowed)

(verb)

3rd person , singular, active, past perfect (Lit) of abhivādaya

Periphrastic Perfect (Lit) third singular active

Formed from root vad with prefix abhi-, in causative -aya, and periphrastic perfect with āmāsa

Prefix: abhi

Root: vad (class 1)

Note: Causative of 'to speak/greet' with 'abhi-'

पितरम् (pitaram) - father (father (accusative singular))

(noun)

Accusative, masculine, singular of pitṛ

pitṛ - father

पावनाकृतिम् (pāvanākṛtim) - who possessed a purifying form (of purifying form, whose form is pure (accusative singular))

(adjective)

Accusative, masculine, singular of pāvanākṛti

pāvanākṛti - of purifying form, whose form is pure

Bahuvrihi compound

Compound type : bahuvrihi (pāvana+ākṛti)

• pāvana – purifying, sacred, pure
  adjective (neuter)
  Derived from root pū (to purify)
  Root: pū (class 1)
• ākṛti – form, shape, appearance
  noun (feminine)
  Prefix: ā
  Root: kṛ (class 8)

Note: Qualifies pitaram

प्रथम-उल्लासितः (prathama-ullāsitaḥ) - newly risen (first expanded, first risen, newly appeared)

(adjective)

Nominative, masculine, singular of prathama-ullāsita

prathama-ullāsita - first expanded, first risen, newly appeared

Past Passive Participle

Karmadhāraya compound of prathama and ullāsita (from ud-las)

Compound type : karmadharaya (prathama+ullāsita)

• prathama – first
  adjective (masculine)
• ullāsita – expanded, risen, rejoiced
  adjective (masculine)
  Past Passive Participle
  Derived from root las with prefix ud-
  Prefix: ud
  Root: las (class 1)

Note: Qualifies meghaḥ

मेघः (meghaḥ) - cloud

(noun)

Nominative, masculine, singular of megha

megha - cloud

Root: mih (class 1)

स्तनितेन (stanitena) - with its thunder (with thunder, by the sound of thunder)

(noun)

Instrumental, neuter, singular of stanita

stanita - thunder, roaring, sound

Past Passive Participle (substantivized)

Derived from root stan (to thunder, roar)

Root: stan (class 1)

इव (iva) - just as (like, as, as if)

(indeclinable)

पर्वतम् (parvatam) - mountain (mountain (accusative singular))

(noun)

Accusative, masculine, singular of parvata

parvata - mountain