योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-86, verse-18

तेनाराजत पुत्रेण मुनिना मुनिनायकः ।
रत्नाद्रौ प्रतिबिम्बेन संध्योदित इवोडुराट् ॥ १८ ॥

tenārājata putreṇa muninā munināyakaḥ ,
ratnādrau pratibimbena saṃdhyodita ivoḍurāṭ 18

18. tena arājata putreṇa muninā munināyakaḥ
ratnādrau pratibimbena sandhyā-uditaḥ iva uḍurāṭ

18. munināyakaḥ tena putreṇa muninā arājata,
ratnādrau pratibimbena sandhyāuditaḥ uḍurāṭ iva

18. By that son, who was himself a sage, the leader of sages (Nārada) shone, just as the moon, risen at twilight, shines with its reflection on a jewel mountain.

Words meanings summery:

• तेन (tena) - by that (son) (by that)

• अराजत (arājata) - he shone

• पुत्रेण (putreṇa) - by the son

• मुनिना (muninā) - by the sage

• मुनिनायकः (munināyakaḥ) - leader of sages

• रत्नाद्रौ (ratnādrau) - on a jewel mountain

• प्रतिबिम्बेन (pratibimbena) - by means of a reflection

• सन्ध्या-उदितः (sandhyā-uditaḥ) - risen at twilight

• इव (iva) - like, as if

• उडुराट् (uḍurāṭ) - moon, lord of stars

Words meanings and morphology

तेन (tena) - by that (son) (by that)

(pronoun)

Instrumental, masculine, singular of tad

tad - that, he, she, it

Note: Refers to the son.

अराजत (arājata) - he shone

(verb)

3rd person , singular, middle, imperfect (laṅ) of rāj

Imperfect 3rd singular middle voice of √rāj (class 1).

Root: rāj (class 1)

पुत्रेण (putreṇa) - by the son

(noun)

Instrumental, masculine, singular of putra

putra - son

मुनिना (muninā) - by the sage

(noun)

Instrumental, masculine, singular of muni

muni - sage, ascetic, seer

Note: Qualifies putreṇa; the son himself being a sage.

मुनिनायकः (munināyakaḥ) - leader of sages

(noun)

Nominative, masculine, singular of munināyaka

munināyaka - leader of sages, chief ascetic

Compound type : tatpuruṣa (muni+nāyaka)

• muni – sage, ascetic, seer
  noun (masculine)
• nāyaka – leader, chief, hero
  noun (masculine)

Note: Refers to Nārada.

रत्नाद्रौ (ratnādrau) - on a jewel mountain

(noun)

Locative, masculine, singular of ratnādri

ratnādri - jewel mountain, mountain of gems

Compound type : tatpuruṣa (ratna+adri)

• ratna – jewel, gem, precious stone
  noun (neuter)
• adri – mountain, rock, stone
  noun (masculine)

प्रतिबिम्बेन (pratibimbena) - by means of a reflection

(noun)

Instrumental, neuter, singular of pratibimba

pratibimba - reflection, image, shadow

Compound type : tatpuruṣa (prati+bimba)

• prati – against, towards, in return
  indeclinable
  Prefix
• bimba – disk, reflection, image, object
  noun (neuter)

सन्ध्या-उदितः (sandhyā-uditaḥ) - risen at twilight

(adjective)

Nominative, masculine, singular of sandhyāudita

sandhyāudita - risen at twilight, emerged at evening

Compound type : tatpuruṣa (sandhyā+udita)

• sandhyā – twilight, evening, junction of day and night
  noun (feminine)
• udita – risen, appeared, spoken
  adjective
  Past Passive Participle
  Formed from ud-√i (to rise, go up)
  Prefix: ud
  Root: i (class 2)

इव (iva) - like, as if

(indeclinable)

उडुराट् (uḍurāṭ) - moon, lord of stars

(noun)

Nominative, masculine, singular of uḍurāj

uḍurāj - moon (king of stars)

Compound type : tatpuruṣa (uḍu+rāj)

• uḍu – star, constellation
  noun (neuter)
• rāj – king, ruler, shining
  noun (masculine)