योगवासिष्ठः yogavāsiṣṭhaḥ - book-4, chapter-31, verse-8

अहङ्काराम्बुदच्छन्नं परमार्थेन्दुमण्डलम् ।
रसायनमयं शीतमदृश्यत्वमुपागतम् ॥ ८ ॥

ahaṅkārāmbudacchannaṃ paramārthendumaṇḍalam ,
rasāyanamayaṃ śītamadṛśyatvamupāgatam 8

8. ahaṅkārāmbudacchannam paramārthendumaṇḍalam
rasāyanamayam śītam adṛśyatvam upāgatam

8. ahaṅkārāmbudacchannam paramārthendumaṇḍalam
rasāyanamayam śītam adṛśyatvam upāgatam

8. The disc of the moon of supreme reality (paramārtha), covered by the clouds of ego (ahaṅkāra), which is full of nectar and cool, has become invisible.

Words meanings summery:

• अहङ्काराम्बुदच्छन्नम् (ahaṅkārāmbudacchannam) - The supreme reality is obscured by the ego as if by clouds. (covered by the clouds of ego)

• परमार्थेन्दुमण्डलम् (paramārthendumaṇḍalam) - refers to the essential truth or ultimate reality, compared to the moon's disc (the disc of the moon of supreme reality)

• रसायनमयम् (rasāyanamayam) - implying the nourishing and life-giving quality of supreme reality (consisting of elixir, made of nectar)

• शीतम् (śītam) - implies the calming and soothing nature of supreme reality (cool, cold, tranquil)

• अदृश्यत्वम् (adṛśyatvam) - the state of becoming unseen or imperceptible (invisibility, hiddenness)

• उपागतम् (upāgatam) - has become, has reached the state of (approached, attained, reached)

Words meanings and morphology

अहङ्काराम्बुदच्छन्नम् (ahaṅkārāmbudacchannam) - The supreme reality is obscured by the ego as if by clouds. (covered by the clouds of ego)

(adjective)

Nominative, neuter, singular of ahaṅkārāmbudacchanna

ahaṅkārāmbudacchanna - covered by the clouds of ego

Past Passive Participle (channa)

Bahuvrihi compound: ahaṅkāra (ego) + ambuda (cloud) + channa (covered)

Compound type : bahuvrīhi (ahaṅkāra+ambuda+channa)

• ahaṅkāra – ego, self-consciousness
  noun (masculine)
  Root: kṛ (class 8)
• ambuda – cloud (giver of water)
  noun (masculine)
  compound: ambu (water) + da (giver)
  Root: dā (class 3)
• channa – covered, hidden, obscured
  adjective (neuter)
  Past Passive Participle
  derived from root chād
  Root: chād (class 10)

Note: adjective describing paramārthendumaṇḍalam

परमार्थेन्दुमण्डलम् (paramārthendumaṇḍalam) - refers to the essential truth or ultimate reality, compared to the moon's disc (the disc of the moon of supreme reality)

(noun)

Nominative, neuter, singular of paramārthendumaṇḍala

paramārthendumaṇḍala - the disc of the moon of supreme reality

karmadhāraya / tatpuruṣa compound: paramārtha (supreme reality) + indu (moon) + maṇḍala (disc)

Compound type : rūpaka (paramārtha+indu+maṇḍala)

• paramārtha – supreme truth, ultimate reality
  noun (masculine)
  compound: parama (supreme) + artha (meaning/reality)
• indu – moon
  noun (masculine)
• maṇḍala – disc, circle, sphere
  noun (neuter)

Note: main subject being described

रसायनमयम् (rasāyanamayam) - implying the nourishing and life-giving quality of supreme reality (consisting of elixir, made of nectar)

(adjective)

Nominative, neuter, singular of rasāyanamaya

rasāyanamaya - consisting of elixir/nectar

derived from rasāyana + suffix maya (full of, consisting of)

Note: adjective describing paramārthendumaṇḍalam

शीतम् (śītam) - implies the calming and soothing nature of supreme reality (cool, cold, tranquil)

(adjective)

Nominative, neuter, singular of śīta

śīta - cool, cold, tranquil

Past Passive Participle

from śyai (to freeze)

Root: śyai (class 1)

Note: adjective describing paramārthendumaṇḍalam

अदृश्यत्वम् (adṛśyatvam) - the state of becoming unseen or imperceptible (invisibility, hiddenness)

(noun)

Accusative, neuter, singular of adṛśyatva

adṛśyatva - invisibility, hiddenness

compound a (not) + dṛśya (visible) + suffix tva (state of being)

Compound type : nañ tatpuruṣa (a+dṛśya+tva)

• a – not, non-, un-
  indeclinable
  negative prefix
• dṛśya – visible, to be seen
  adjective (neuter)
  gerundive/potential passive participle
  derived from root dṛś + suffix -ya
  Root: dṛś (class 1)
• tva – state of being, -ness
  suffix (neuter)
  nominalizing suffix

Note: object of upāgatam (has attained invisibility)

उपागतम् (upāgatam) - has become, has reached the state of (approached, attained, reached)

(adjective)

Nominative, neuter, singular of upāgata

upāgata - approached, attained, reached, arrived

Past Passive Participle

from upa + ā + root gam + suffix kta

Prefixes: upa+ā

Root: gam (class 1)