योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-1, verse-45

प्रहरस्यार्धमात्रं ते तत आमुद्रितेक्षणाः ।
उत्स्वप्नमाययुर्निद्रां क्षणाद्विद्रावितश्रमाम् ॥ ४५ ॥

praharasyārdhamātraṃ te tata āmudritekṣaṇāḥ ,
utsvapnamāyayurnidrāṃ kṣaṇādvidrāvitaśramām 45

45. praharasya ardhamātram te tataḥ āmudrita īkṣaṇāḥ
utsvapnam āyayuḥ nidrām kṣaṇāt vidrāvitaśramām

45. tataḥ te āmudrita īkṣaṇāḥ praharasya ardhamātram
kṣaṇāt vidrāvitaśramām utsvapnam nidrām āyayuḥ

45. Then, with eyes closed, for only half a three-hour period, they attained a deep, dreamless sleep (nidrā) that quickly dispelled their fatigue.

Words meanings summery:

• प्रहरस्य (praharasya) - of a prahara, of a three-hour period

• अर्धमात्रम् (ardhamātram) - half a measure, only half

• ते (te) - Rāma, Lakṣmaṇa, and Śatrughna (they)

• ततः (tataḥ) - then, thereupon, from there

• आमुद्रित (āmudrita) - closed, sealed

• ईक्षणाः (īkṣaṇāḥ) - eyes

• उत्स्वप्नम् (utsvapnam) - a deep, dreamless state of sleep (dreamless, beyond dreams, excellent sleep)

• आययुः (āyayuḥ) - they reached, they attained, they went to

• निद्राम् (nidrām) - sleep

• क्षणात् (kṣaṇāt) - quickly, in a moment, instantly

• विद्रावितश्रमाम् (vidrāvitaśramām) - whose fatigue was dispelled

Words meanings and morphology

प्रहरस्य (praharasya) - of a prahara, of a three-hour period

(noun)

Genitive, masculine, singular of prahara

prahara - watch, three-hour period, stroke

From pra + hṛ (to strike, take).

Prefix: pra

Root: hṛ (class 1)

Note: Governed by 'ardhamātram'.

अर्धमात्रम् (ardhamātram) - half a measure, only half

(noun)

Accusative, neuter, singular of ardhamātra

ardhamātra - half a measure, consisting of half

Compound type : karmadhāraya (ardha+mātra)

• ardha – half
  noun (neuter)
• mātra – measure, mere, only
  noun (neuter)
  From mā (to measure).
  Root: mā (class 2)

Note: Used as an accusative of duration, 'for half a measure'.

ते (te) - Rāma, Lakṣmaṇa, and Śatrughna (they)

(pronoun)

Nominative, masculine, plural of tad

tad - that, he, she, it

ततः (tataḥ) - then, thereupon, from there

(indeclinable)

From tad + tasil suffix.

आमुद्रित (āmudrita) - closed, sealed

(adjective)

Nominative, masculine, plural of āmudrita

āmudrita - sealed, closed, stamped

Past Passive Participle

From ā (prefix) + mudr (to seal, close) + kta (PPP suffix).

Prefix: ā

Root: mudr (class 10)

ईक्षणाः (īkṣaṇāḥ) - eyes

(noun)

Nominative, masculine, plural of īkṣaṇa

īkṣaṇa - eye, sight, looking

From īkṣ (to see) + lyuṭ suffix.

Root: īkṣ (class 1)

Note: Forms a Bahuvrīhi adjective 'āmudritekṣaṇāḥ' (whose eyes are closed), describing the subjects 'te'.

उत्स्वप्नम् (utsvapnam) - a deep, dreamless state of sleep (dreamless, beyond dreams, excellent sleep)

(noun)

Accusative, neuter, singular of utsvapna

utsvapna - dreamless, beyond dreams, excellent sleep; or sleep as a dream

From ut (prefix implying 'up', 'out', 'beyond') + svapna (sleep, dream).

Compound type : tatpuruṣa (ut+svapna)

• ut – up, out, beyond, superior
  prefix
• svapna – sleep, dream
  noun (masculine)
  From svap (to sleep).
  Root: svap (class 2)

Note: Functions as an attribute to 'nidrām' or adverbially, qualifying the manner of attaining sleep.

आययुः (āyayuḥ) - they reached, they attained, they went to

(verb)

3rd person , plural, active, perfect (liṭ) of i

Perfect active

Perfect (liṭ) 3rd person plural of ā + i (to go towards, attain).

Prefix: ā

Root: i (class 2)

निद्राम् (nidrām) - sleep

(noun)

Accusative, feminine, singular of nidrā

nidrā - sleep, slumber

From ni + drā (to sleep).

Prefix: ni

Root: drā (class 2)

Note: Direct object of 'āyayuḥ'.

क्षणात् (kṣaṇāt) - quickly, in a moment, instantly

(noun)

Ablative, masculine, singular of kṣaṇa

kṣaṇa - moment, instant, short time

From kṣan (to hurt, be empty).

Root: kṣaṇ (class 8)

Note: Used adverbially to mean 'quickly' or 'in a moment'.

विद्रावितश्रमाम् (vidrāvitaśramām) - whose fatigue was dispelled

(adjective)

Accusative, feminine, singular of vidrāvitaśramā

vidrāvitaśramā - having fatigue dispelled/driven away

Compound type : bahuvrīhi (vidrāvita+śrama)

• vidrāvita – dispelled, driven away, frightened
  adjective (neuter)
  Past Passive Participle (causative)
  From vi + drāvaya (causative of dru 'to run') + kta (PPP suffix).
  Prefix: vi
  Root: dru (class 1)
• śrama – fatigue, exertion, weariness
  noun (masculine)
  From śram (to be weary).
  Root: śram (class 4)

Note: Modifies 'nidrām'.