योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-81, verse-80

संहारसर्गनिचया दिनरात्रिभागे बिन्दूपमा रजतयोर्दिवसोत्कराश्च ।
कृष्णाः सिताश्च परितोऽमलशुक्लकृष्णस्वादर्शमण्डलवदाकुलमुल्लसन्ति ॥ ८० ॥

saṃhārasarganicayā dinarātribhāge bindūpamā rajatayordivasotkarāśca ,
kṛṣṇāḥ sitāśca parito'malaśuklakṛṣṇasvādarśamaṇḍalavadākulamullasanti 80

80. saṃhārasarganicayā dinarātribhāge
bindūpamā rajatayoḥ divasotkarāḥ ca
kṛṣṇāḥ sitāḥ ca paritaḥ
amalaśuklakṛṣṇasvādarsamaṇḍalavat ākulam ullasanti

80. dinarātribhāge saṃhārasarganicayā bindūpamāḥ (santi),
rajatayoḥ kṛṣṇāḥ sitāḥ ca divasotkarāḥ ca paritaḥ amalaśuklakṛṣṇasvādarsamaṇḍalavat ākulam ullasanti

80. The accumulations of cosmic dissolution and creation, appearing like drops, along with the masses of days—both dark and white, indicative of their dual nature—within the divisions of day and night, shine forth vibrantly all around, like pristine black and white mirror discs.

Words meanings summery:

• संहारसर्गनिचया (saṁhārasarganicayā) - accumulations of dissolution and creation

• दिनरात्रिभागे (dinarātribhāge) - in the parts of day and night

• बिन्दूपमा (bindūpamā) - like drops, resembling drops

• रजतयोः (rajatayoḥ) - referring to the two types of days (dark and white fortnights) (of the two silver/bright ones, indicative of their dual nature)

• दिवसोत्कराः (divasotkarāḥ) - masses of days, multitudes of days

• च (ca) - and

• कृष्णाः (kṛṣṇāḥ) - referring to the dark fortnight (dark, black)

• सिताः (sitāḥ) - referring to the bright fortnight (white, bright)

• च (ca) - and

• परितः (paritaḥ) - all around, everywhere

• अमलशुक्लकृष्णस्वादर्समण्डलवत् (amalaśuklakṛṣṇasvādarsamaṇḍalavat) - like pure white and black mirror discs

• आकुलम् (ākulam) - tremulously, vibrantly, agitatedly

• उल्लसन्ति (ullasanti) - they shine forth, they sparkle

Words meanings and morphology

संहारसर्गनिचया (saṁhārasarganicayā) - accumulations of dissolution and creation

(noun)

Nominative, feminine, plural of saṃhārasarganicaya

saṁhārasarganicaya - accumulation of dissolution and creation

Compound type : tatpuruṣa (saṃhāra+sarga+nicaya)

• saṃhāra – destruction, dissolution, bringing together
  noun (masculine)
  Prefix: sam
  Root: hṛ (class 1)
• sarga – creation, emission, discharge
  noun (masculine)
  Root: sṛj (class 6)
• nicaya – accumulation, heap, collection
  noun (masculine)
  Prefix: ni
  Root: ci (class 5)

दिनरात्रिभागे (dinarātribhāge) - in the parts of day and night

(noun)

Locative, masculine, singular of dinarātribhāga

dinarātribhāga - part of day and night

Compound type : tatpuruṣa (dina+rātri+bhāga)

• dina – day
  noun (neuter)
• rātri – night
  noun (feminine)
• bhāga – part, share, division
  noun (masculine)
  Root: bhaj (class 1)

बिन्दूपमा (bindūpamā) - like drops, resembling drops

(adjective)

Nominative, feminine, plural of bindūpamā

bindūpamā - resembling a drop

Compound type : tatpuruṣa (bindu+upamā)

• bindu – drop, dot
  noun (masculine)
• upamā – simile, comparison, resemblance
  noun (feminine)
  Prefix: upa

रजतयोः (rajatayoḥ) - referring to the two types of days (dark and white fortnights) (of the two silver/bright ones, indicative of their dual nature)

(adjective)

Genitive, dual of rajata

rajata - silver, white, bright; referring to two aspects or divisions

दिवसोत्कराः (divasotkarāḥ) - masses of days, multitudes of days

(noun)

Nominative, masculine, plural of divasotkara

divasotkara - mass/heap of days

Compound type : tatpuruṣa (divasa+utkara)

• divasa – day
  noun (masculine)
  Root: div (class 4)
• utkara – heap, mass, multitude
  noun (masculine)
  Prefix: ud
  Root: kṛ (class 6)

च (ca) - and

(indeclinable)

कृष्णाः (kṛṣṇāḥ) - referring to the dark fortnight (dark, black)

(adjective)

Nominative, masculine, plural of kṛṣṇa

kṛṣṇa - black, dark; referring to the dark fortnight

सिताः (sitāḥ) - referring to the bright fortnight (white, bright)

(adjective)

Nominative, masculine, plural of sita

sita - white, bright

Root: si (class 5)

च (ca) - and

(indeclinable)

परितः (paritaḥ) - all around, everywhere

(indeclinable)

अमलशुक्लकृष्णस्वादर्समण्डलवत् (amalaśuklakṛṣṇasvādarsamaṇḍalavat) - like pure white and black mirror discs

(indeclinable)

suffix -vat for comparison

Compound type : bahuvrīhi/tatpuruṣa (amala+śukla+kṛṣṇa+sva+ādarśa+maṇḍala)

• amala – pure, spotless, immaculate
  adjective
  Prefix: a
• śukla – white, bright
  adjective (masculine)
• kṛṣṇa – black, dark
  adjective (masculine)
• sva – one's own, self
  pronoun
• ādarśa – mirror, reflection
  noun (masculine)
  Prefix: ā
  Root: dṛś (class 1)
• maṇḍala – disc, circle, orb
  noun (neuter)

आकुलम् (ākulam) - tremulously, vibrantly, agitatedly

(adjective)

Accusative, neuter, singular of ākula

ākula - agitated, confused, trembling

Note: Used adverbially here.

उल्लसन्ति (ullasanti) - they shine forth, they sparkle

(verb)

3rd person , plural, active, present (laṭ) of ullas

Prefix: ud

Root: las (class 1)