योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-21, verse-4

यदा लोलायितवपुर्बभूवामरपर्वतः ।
सर्वतो दत्तसाम्याद्रिस्तदा नाकम्पत द्रुमः ॥ ४ ॥

yadā lolāyitavapurbabhūvāmaraparvataḥ ,
sarvato dattasāmyādristadā nākampata drumaḥ 4

4. yadā lolāyitavapuḥ babhūva amaraparvataḥ
sarvataḥ dattasāmyādriḥ tadā na akampata drumaḥ

4. yadā lolāyitavapuḥ sarvataḥ dattasāmyādriḥ amaraparvataḥ babhūva,
tadā drumaḥ na akampata.

4. When the immortal mountain (Meru), with its body swaying, was given equilibrium on all sides (during the cosmic churning), even then the tree did not tremble.

Words meanings summery:

• यदा (yadā) - when

• लोलायितवपुः (lolāyitavapuḥ) - having a swaying body, whose body was agitated

• बभूव (babhūva) - he became, it was

• अमरपर्वतः (amaraparvataḥ) - Mount Meru (the cosmic mountain) (immortal mountain, mountain of the gods)

• सर्वतः (sarvataḥ) - from all sides, everywhere, completely

• दत्तसाम्याद्रिः (dattasāmyādriḥ) - the mountain (Meru) that was supported/stabilized (the mountain to which equilibrium was given)

• तदा (tadā) - then, at that time

• न (na) - not

• अकम्पत (akampata) - it trembled (negated by na)

• द्रुमः (drumaḥ) - tree

Words meanings and morphology

यदा (yadā) - when

(indeclinable)

Relative adverb of time.

लोलायितवपुः (lolāyitavapuḥ) - having a swaying body, whose body was agitated

(adjective)

Nominative, masculine, singular of lolāyitavapus

lolāyitavapus - one whose body is trembling/swaying/agitated

lolāyita (swaying, trembling, from root lul with intensive suffix) + vapus (body).

Compound type : bahuvrīhi (lolāyita+vapus)

• lolāyita – swaying, agitated, trembling
  adjective (neuter)
  Denominative verb participle
  From lola (trembling) or root lul with intensive/denominative suffix.
  Root: lul (class 10)
• vapus – body, form
  noun (neuter)

Note: Agrees with amaraparvataḥ.

बभूव (babhūva) - he became, it was

(verb)

3rd person , singular, active, perfect (lit) of bhū

Root in perfect tense, active voice. 3rd singular perfect.

Root: bhū (class 1)

अमरपर्वतः (amaraparvataḥ) - Mount Meru (the cosmic mountain) (immortal mountain, mountain of the gods)

(noun)

Nominative, masculine, singular of amaraparvata

amaraparvata - mountain of the immortals/gods, Mount Meru

amara (immortal) + parvata (mountain).

Compound type : tatpuruṣa (amara+parvata)

• amara – immortal, god, deity
  adjective (masculine)
  a (not) + mara (dying).
  Prefix: a
  Root: mṛ (class 1)
• parvata – mountain, hill
  noun (masculine)

Note: Subject of babhūva.

सर्वतः (sarvataḥ) - from all sides, everywhere, completely

(indeclinable)

Adverb formed from sarva (all) + suffix tas.

Note: Qualifies dattasāmyādriḥ.

दत्तसाम्याद्रिः (dattasāmyādriḥ) - the mountain (Meru) that was supported/stabilized (the mountain to which equilibrium was given)

(adjective)

Nominative, masculine, singular of dattasāmyādri

dattasāmyādri - a mountain that has been given balance or stability

datta (given, PPP of dā) + sāmya (equilibrium) + adri (mountain). Bahuvrihi compound.

Compound type : bahuvrīhi (datta+sāmya+adri)

• datta – given, granted
  adjective (masculine)
  Past Passive Participle
  From root dā (to give).
  Root: dā (class 3)
• sāmya – equality, balance, equilibrium
  noun (neuter)
  From sama (equal) + suffix -ya.
• adri – mountain, rock
  noun (masculine)

Note: Agrees with amaraparvataḥ.

तदा (tadā) - then, at that time

(indeclinable)

Correlative adverb of time to yadā.

न (na) - not

(indeclinable)

Particle of negation.

अकम्पत (akampata) - it trembled (negated by na)

(verb)

3rd person , singular, middle, imperfect (laṅ) of kamp

Root in imperfect tense, middle voice. 3rd singular imperfect. a- is the augment for past tense.

Root: kamp (class 1)

Note: The subject is drumaḥ.

द्रुमः (drumaḥ) - tree

(noun)

Nominative, masculine, singular of druma

druma - tree

Root: dru

Note: Subject of akampata.