योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-45, verse-4

व्यूहमध्यमहामेरुं मन्दराद्रिरिवाचलम् ।
महाकल्पान्तवात्याया अपि वेगैरचालितम् ॥ ४ ॥

vyūhamadhyamahāmeruṃ mandarādririvācalam ,
mahākalpāntavātyāyā api vegairacālitam 4

4. vyūhamadhyamahāmerum mandarādriḥ iva acalam
mahākalpāntavātyāyāḥ api vegaiḥ acālitam

4. mandarādriḥ iva acalam vyūhamadhyamahāmerum
mahākalpāntavātyāyāḥ api vegaiḥ acālitam

4. It is unmoving like Mount Mandara, like the great Meru mountain at the center of a cosmic array, and it remains unshaken even by the tumultuous gales at the end of a great cosmic cycle (mahākalpa).

Words meanings summery:

• व्यूहमध्यमहामेरुम् (vyūhamadhyamahāmerum) - like the great Meru mountain at the center of a cosmic array (like the great Meru mountain in the center of an array)

• मन्दराद्रिः (mandarādriḥ) - Mount Mandara, famous in Hindu mythology for the Samudra manthan (churning of the ocean) (Mandara mountain)

• इव (iva) - like, as, as if

• अचलम् (acalam) - unmoving, immovable, steady

• महाकल्पान्तवात्यायाः (mahākalpāntavātyāyāḥ) - of the tumultuous gales at the end of a great cosmic cycle (mahākalpa) (of the storm at the end of a great cosmic cycle)

• अपि (api) - emphasizes the extreme nature of the storms (even, also)

• वेगैः (vegaiḥ) - by their (the gales') force/speed (by forces, by speeds, by impulses)

• अचालितम् (acālitam) - remains unshaken (not moved, unshaken)

Words meanings and morphology

व्यूहमध्यमहामेरुम् (vyūhamadhyamahāmerum) - like the great Meru mountain at the center of a cosmic array (like the great Meru mountain in the center of an array)

(adjective)

Accusative, masculine, singular of vyūhamadhyamahāmeru

vyūhamadhyamahāmeru - like the great Meru mountain in the middle of a formation/array

Compound type : tatpuruṣa (vyūha+madhya+mahāmeru)

• vyūha – array, formation, disposition (especially military), cosmic system
  noun (masculine)
• madhya – middle, center
  noun (neuter)
• mahāmeru – Great Meru mountain (the central mountain of the world in Hindu cosmology)
  proper noun (masculine)

Note: Predicative accusative describing the 'bilvaphalam'

मन्दराद्रिः (mandarādriḥ) - Mount Mandara, famous in Hindu mythology for the Samudra manthan (churning of the ocean) (Mandara mountain)

(proper noun)

Nominative, masculine, singular of mandarādri

mandarādri - Mount Mandara, a mythical mountain used as a churning staff by the gods and asuras

Compound type : tatpuruṣa (mandara+adri)

• mandara – Mandara mountain
  proper noun (masculine)
• adri – mountain, hill
  noun (masculine)

Note: Used in simile 'mandarādriḥ iva'

इव (iva) - like, as, as if

(indeclinable)

Note: Particle of comparison

अचलम् (acalam) - unmoving, immovable, steady

(adjective)

Accusative, neuter, singular of acala

acala - unmoving, immovable, steady; also 'mountain'

From 'a' (not) + 'cala' (moving)

Compound type : nañ-tatpuruṣa (a+cala)

• a – not, non-
  indeclinable
• cala – moving, unsteady
  adjective (masculine)
  From root 'cal' (to move)
  Root: cal (class 1)

Note: Predicative accusative describing the 'bilvaphalam'

महाकल्पान्तवात्यायाः (mahākalpāntavātyāyāḥ) - of the tumultuous gales at the end of a great cosmic cycle (mahākalpa) (of the storm at the end of a great cosmic cycle)

(noun)

Genitive, feminine, singular of mahākalpāntavātyā

mahākalpāntavātyā - storm at the end of a great cosmic cycle

Compound type : tatpuruṣa (mahākalpa+anta+vātyā)

• mahākalpa – a great cosmic cycle, lasting billions of years (a day of Brahmā)
  noun (masculine)
• anta – end, boundary
  noun (masculine)
• vātyā – storm, tempest, hurricane
  noun (feminine)

Note: Possessive, modifying 'vegaiḥ'

अपि (api) - emphasizes the extreme nature of the storms (even, also)

(indeclinable)

वेगैः (vegaiḥ) - by their (the gales') force/speed (by forces, by speeds, by impulses)

(noun)

Instrumental, masculine, plural of vega

vega - speed, velocity, force, impetuosity, impetus

Root: vij (class 6)

Note: Agent of 'acālitam'

अचालितम् (acālitam) - remains unshaken (not moved, unshaken)

(adjective)

Accusative, neuter, singular of acālita

acālita - not moved, unshaken, undisturbed

Past Passive Participle (negative)

From 'a' (not) + causal of root 'cal' (to move) + -ita suffix

Compound type : nañ-tatpuruṣa (a+cālita)

• a – not, non-
  indeclinable
• cālita – moved, agitated (causal form)
  adjective (masculine)
  Past Passive Participle (causal)
  From causal form of root 'cal' (to move)
  Root: cal (class 1)

Note: Predicative accusative describing the 'bilvaphalam'