योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-24, verse-18

अहंभावोल्लसद्यक्षा क्षीणा नाज्ञानयामिनी ।
अज्ञानध्वान्तमत्तेभसिंहः कर्मतृणानलः ॥ १८ ॥

ahaṃbhāvollasadyakṣā kṣīṇā nājñānayāminī ,
ajñānadhvāntamattebhasiṃhaḥ karmatṛṇānalaḥ 18

18. ahaṃbhāva-ullasat-yakṣā kṣīṇā na ajñāna-yāminī
ajñāna-dhvānta-matta-ibha-siṃhaḥ karma-tṛṇa-analaḥ

18. ajñāna-yāminī ahaṃbhāva-ullasat-yakṣā kṣīṇā na ahaṃbhāvaḥ
ajñāna-dhvānta-matta-ibha-siṃhaḥ karma-tṛṇa-analaḥ

18. The night of ignorance (ajñānayāminī), with the ego (ahaṃbhāva) shining like a celestial female (yakṣā), is not diminishing. This ego (ahaṃbhāva) is like a fierce lion amidst the intoxicated elephants of ignorance's darkness, and it is a blazing fire to the grass of actions (karma).

Words meanings summery:

• अहंभाव-उल्लसत्-यक्षा (ahaṁbhāva-ullasat-yakṣā) - (the night of ignorance) which is characterized by the ego (ahaṃbhāva) shining brightly like a yakṣa (a female yakṣa shining/gleaming with egoism)

• क्षीणा (kṣīṇā) - not diminishing, not fading (waned, diminished, emaciated, wasted away)

• न (na) - not (not, no, nor)

• अज्ञान-यामिनी (ajñāna-yāminī) - the pervasive darkness of spiritual ignorance (night of ignorance)

• अज्ञान-ध्वान्त-मत्त-इभ-सिंहः (ajñāna-dhvānta-matta-ibha-siṁhaḥ) - (ego) a fierce lion that dominates and sustains the intoxicated elephants of ignorance's darkness (a lion to the intoxicated elephants of the darkness of ignorance)

• कर्म-तृण-अनलः (karma-tṛṇa-analaḥ) - (ego) a blazing fire that consumes and perpetuates the grass-like actions (karma) (fire to the grass of actions)

Words meanings and morphology

अहंभाव-उल्लसत्-यक्षा (ahaṁbhāva-ullasat-yakṣā) - (the night of ignorance) which is characterized by the ego (ahaṃbhāva) shining brightly like a yakṣa (a female yakṣa shining/gleaming with egoism)

(adjective)

Nominative, feminine, singular of ahaṃbhāva-ullasat-yakṣā

ahaṁbhāva-ullasat-yakṣa - a yakṣa shining with ego

Feminine nominative singular of a compound adjective.

Compound type : bahuvrīhi (ahaṃbhāva+ullasat+yakṣā)

• ahaṃbhāva – ego, egoism, self-sense
  noun (masculine)
  From `aham` (I) and `bhāva` (state, nature).
• ullasat – shining, gleaming, flashing, rising, thriving
  adjective (feminine)
  Present Active Participle
  From root `las` (to shine, appear) with prefix `ud` (ut).
  Prefix: ud
  Root: las (class 1)
• yakṣā – a female yakṣa (a class of demigods, often associated with wealth and nature)
  noun (feminine)

Note: Qualifies `ajñāna-yāminī`.

क्षीणा (kṣīṇā) - not diminishing, not fading (waned, diminished, emaciated, wasted away)

(adjective)

Nominative, feminine, singular of kṣīṇa

kṣīṇa - waned, diminished, emaciated, weak, destroyed

Past Passive Participle

From root `kṣi` (to waste away, to destroy).

Root: kṣi (class 1)

Note: Qualifies `ajñāna-yāminī`.

न (na) - not (not, no, nor)

(indeclinable)

अज्ञान-यामिनी (ajñāna-yāminī) - the pervasive darkness of spiritual ignorance (night of ignorance)

(noun)

Nominative, feminine, singular of ajñāna-yāminī

ajñāna-yāminī - night of ignorance

Compound type : ṣaṣṭhī-tatpuruṣa (ajñāna+yāminī)

• ajñāna – ignorance, nescience, spiritual ignorance
  noun (neuter)
  Negation (`a-`) of `jñāna` (knowledge).
  Root: jñā (class 9)
• yāminī – night
  noun (feminine)

Note: Subject of the first line.

अज्ञान-ध्वान्त-मत्त-इभ-सिंहः (ajñāna-dhvānta-matta-ibha-siṁhaḥ) - (ego) a fierce lion that dominates and sustains the intoxicated elephants of ignorance's darkness (a lion to the intoxicated elephants of the darkness of ignorance)

(noun)

Nominative, masculine, singular of ajñāna-dhvānta-matta-ibha-siṃha

ajñāna-dhvānta-matta-ibha-siṁha - a lion for the intoxicated elephants of the darkness of ignorance

Masculine nominative singular.

Compound type : ṣaṣṭhī-tatpuruṣa (ajñāna+dhvānta+matta+ibha+siṃha)

• ajñāna – ignorance, nescience
  noun (neuter)
  Root: jñā (class 9)
• dhvānta – darkness, gloom
  noun (neuter)
  Root: dhvan (class 1)
• matta – intoxicated, maddened, proud, arrogant
  adjective (masculine)
  Past Passive Participle
  From root `mad` (to be drunk, rejoice).
  Root: mad (class 4)
• ibha – elephant
  noun (masculine)
• siṃha – lion
  noun (masculine)

Note: Functions as a predicate nominative, describing `ahaṃbhāva` (ego).

कर्म-तृण-अनलः (karma-tṛṇa-analaḥ) - (ego) a blazing fire that consumes and perpetuates the grass-like actions (karma) (fire to the grass of actions)

(noun)

Nominative, masculine, singular of karma-tṛṇa-anala

karma-tṛṇa-anala - fire to the grass of actions

Masculine nominative singular.

Compound type : ṣaṣṭhī-tatpuruṣa (karma+tṛṇa+anala)

• karma – action, deed, ritual, consequence of action (karma)
  noun (neuter)
  From root `kṛ` (to do).
  Root: kṛ (class 8)
• tṛṇa – grass, straw, blade of grass
  noun (neuter)
• anala – fire, god of fire
  noun (masculine)

Note: Functions as a predicate nominative, describing `ahaṃbhāva` (ego).