योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-113, verse-12

लम्बप्रकाशगम्भीरं प्रसन्नं कान्तिमत्ततम् ।
रजोविरहितं रेजे खं मनो महतामिव ॥ १२ ॥

lambaprakāśagambhīraṃ prasannaṃ kāntimattatam ,
rajovirahitaṃ reje khaṃ mano mahatāmiva 12

12. lambaprakāśagambhīram prasannam kāntimattamam
rajaḥvirahitam reje kham manaḥ mahatām iva

12. kham lambaprakāśagambhīram prasannam kāntimattamam
rajaḥvirahitam reje mahatām manaḥ iva

12. The sky (kham) shone, deep with expansive light, clear, most radiant, and devoid of impurities, like the mind (manas) of great souls.

Words meanings summery:

• लम्बप्रकाशगम्भीरम् (lambaprakāśagambhīram) - deep with expansive light

• प्रसन्नम् (prasannam) - clear, calm, serene

• कान्तिमत्तमम् (kāntimattamam) - most radiant, most lustrous

• रजःविरहितम् (rajaḥvirahitam) - devoid of dust, free from impurity/passion

• रेजे (reje) - shone, appeared, resplended

• खम् (kham) - sky, space, ether

• मनः (manaḥ) - mind, intellect, thought

• महताम् (mahatām) - of great ones, of noble persons

• इव (iva) - like, as, as if

Words meanings and morphology

लम्बप्रकाशगम्भीरम् (lambaprakāśagambhīram) - deep with expansive light

(adjective)

neuter, singular of lambaprakāśagambhīra

lambaprakāśagambhīra - having extended light and being deep

Compound type : tatpuruṣa (lamba+prakāśa+gambhīra)

• lamba – long, extended, hanging
  adjective (masculine)
• prakāśa – light, splendor, manifestation
  noun (masculine)
  Prefix: pra
  Root: kāś (class 1)
• gambhīra – deep, profound, serious
  adjective (neuter)

प्रसन्नम् (prasannam) - clear, calm, serene

(adjective)

neuter, singular of prasanna

prasanna - clear, serene, calm, pleased, tranquil

Past Passive Participle

Derived from root 'sad' with prefix 'pra'

Prefix: pra

Root: sad (class 1)

कान्तिमत्तमम् (kāntimattamam) - most radiant, most lustrous

(adjective)

neuter, singular of kāntimattama

kāntimattama - most radiant, most lustrous

Superlative of 'kāntimat' (radiant, lustrous)

Compound type : tatpuruṣa (kāntimat+tama)

• kāntimat – radiant, lustrous, beautiful
  adjective (masculine)
  Possessive adjective from 'kānti' with suffix 'matup'
• tama – most, best (superlative suffix)
  suffix (neuter)
  Superlative suffix

रजःविरहितम् (rajaḥvirahitam) - devoid of dust, free from impurity/passion

(adjective)

neuter, singular of rajaḥvirahita

rajaḥvirahita - devoid of dust or passion

Compound type : tatpuruṣa (rajas+virahita)

• rajas – dust, dirt, impurity, passion, menstrual fluid
  noun (neuter)
• virahita – devoid of, separated from, abandoned
  adjective (neuter)
  Past Passive Participle
  Derived from root 'rah' with prefix 'vi'
  Prefix: vi
  Root: rah (class 1)

रेजे (reje) - shone, appeared, resplended

(verb)

3rd person , singular, middle, perfect (liṭ) of rāj

Root: rāj (class 1)

Note: Used here in the sense of imperfect/aorist

खम् (kham) - sky, space, ether

(noun)

neuter, singular of kha

kha - sky, space, ether, heaven, zero

मनः (manaḥ) - mind, intellect, thought

(noun)

neuter, singular of manas

manas - mind, intellect, consciousness (manas)

Root: man (class 4)

महताम् (mahatām) - of great ones, of noble persons

(adjective)

Genitive, plural of mahat

mahat - great, large, noble, exalted

इव (iva) - like, as, as if

(indeclinable)