योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-78, verse-15

तृणैरिव तरङ्गेषु दोलान्दोलनमद्रिभिः ।
कुर्वद्भिरुपलाघातभग्नभास्करमण्डलः ॥ १५ ॥

tṛṇairiva taraṅgeṣu dolāndolanamadribhiḥ ,
kurvadbhirupalāghātabhagnabhāskaramaṇḍalaḥ 15

15. tṛṇaiḥ iva taraṅgeṣu dolāandolanam adribhiḥ
kurvadbhiḥ upalāghāta-bhagna-bhāskara-maṇḍalaḥ

15. upalāghāta-bhagna-bhāskara-maṇḍalaḥ adribhiḥ
kurvadbhiḥ dolāandolanam tṛṇaiḥ iva taraṅgeṣu

15. Its solar disc is shattered by the impact of rocks, as mountains, tossed like mere blades of grass in its waves, create a swaying motion.

Words meanings summery:

• तृणैः (tṛṇaiḥ) - like insignificant blades of grass (by grasses, by straws)

• इव (iva) - like, as if

• तरङ्गेषु (taraṅgeṣu) - in the waves

• दोलाअन्दोलनम् (dolāandolanam) - swinging motion, oscillation

• अद्रिभिः (adribhiḥ) - by the mountain-like waves (by mountains)

• कुर्वद्भिः (kurvadbhiḥ) - making, causing, doing

• उपलाघात-भग्न-भास्कर-मण्डलः (upalāghāta-bhagna-bhāskara-maṇḍalaḥ) - one whose sun's orb is shattered by the impact of rocks

Words meanings and morphology

तृणैः (tṛṇaiḥ) - like insignificant blades of grass (by grasses, by straws)

(noun)

Instrumental, neuter, plural of tṛṇa

tṛṇa - grass, straw, blade of grass

Note: Used in a simile (`iva`).

इव (iva) - like, as if

(indeclinable)

तरङ्गेषु (taraṅgeṣu) - in the waves

(noun)

Locative, masculine, plural of taraṅga

taraṅga - wave, surge, billow

Root: tṛ (class 1)

Note: Indicates the location of the swinging motion.

दोलाअन्दोलनम् (dolāandolanam) - swinging motion, oscillation

(noun)

Accusative, neuter, singular of dolāāndolana

dolāāndolana - swinging motion, oscillation

Compound of dolā (swing) and āndolana (swinging).

Compound type : tatpuruṣa (dolā+āndolana)

• dolā – swing, hammock
  noun (feminine)
• āndolana – swinging, shaking, agitation
  noun (neuter)
  Derived from root dol (to swing) with prefix ā
  Prefix: ā
  Root: dol (class 1)

Note: Object of `kurvadbhiḥ`.

अद्रिभिः (adribhiḥ) - by the mountain-like waves (by mountains)

(noun)

Instrumental, masculine, plural of adri

adri - mountain, rock, cloud

Root: ad (class 2)

Note: Agent of `kurvadbhiḥ`.

कुर्वद्भिः (kurvadbhiḥ) - making, causing, doing

(participle)

Instrumental, masculine, plural of kṛ

kṛ - to do, to make, to create

Present Active Participle

Present active participle of root kṛ, in instrumental plural masculine, agreeing with adribhiḥ.

Root: kṛ (class 8)

उपलाघात-भग्न-भास्कर-मण्डलः (upalāghāta-bhagna-bhāskara-maṇḍalaḥ) - one whose sun's orb is shattered by the impact of rocks

(noun)

Nominative, masculine, singular of upalāghāta-bhagna-bhāskara-maṇḍala

upalāghāta-bhagna-bhāskara-maṇḍala - one whose sun's orb is shattered by the impact of rocks

Compound type : bahuvrīhi (upalāghāta+bhagna+bhāskara+maṇḍala)

• upalāghāta – impact of rocks, stone-strike
  noun (masculine)
  Compound of upalā (stone/rock) and āghāta (impact/blow)
  Prefix: ā
  Root: han (class 2)
• bhagna – broken, shattered, destroyed
  adjective
  Past Passive Participle
  Derived from root bhañj (to break)
  Root: bhañj (class 7)
• bhāskara – sun, sun-god, maker of light
  noun (masculine)
  Compound: bhās (light) + kara (maker)
  Root: kṛ (class 8)
• maṇḍala – circle, disk, orb, region
  noun (neuter)

Note: The entire compound acts as an epithet for the subject.