योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-80, verse-37

समुपेत्यापिबद्रुद्रः स मुहूर्तेन तत्पयः ।
कृष्णाङ्गोऽर्क इव ध्वान्तं सत्संपर्क इवागुणम् ॥ ३७ ॥

samupetyāpibadrudraḥ sa muhūrtena tatpayaḥ ,
kṛṣṇāṅgo'rka iva dhvāntaṃ satsaṃparka ivāguṇam 37

37. samupetya apibat rudraḥ saḥ muhūrtena tat payaḥ
kṛṣṇāṅgaḥ arkaḥ iva dhvāntam satsaṃparkaḥ iva aguṇam

37. saḥ kṛṣṇāṅgaḥ rudraḥ samupetya muhūrtena tat payaḥ apibat.
arkaḥ iva ध्वान्तम्,
सत्संपर्कः इव अगुणम्।

37. Having approached, that dark-bodied Rudra drank those waters in a moment, just as the sun dispels darkness, and good association (satsaṃparka) removes vice.

Words meanings summery:

• समुपेत्य (samupetya) - having approached, having arrived

• अपिबत् (apibat) - drank, consumed

• रुद्रः (rudraḥ) - Rudra (a deity, a fierce form of Śiva)

• सः (saḥ) - He (Rudra) (he, that)

• मुहूर्तेन (muhūrtena) - in a moment, within a muhūrta (a unit of time)

• तत् (tat) - that (referring to the water)

• पयः (payaḥ) - water (the ocean) (water, milk)

• कृष्णाङ्गः (kṛṣṇāṅgaḥ) - dark-bodied, black-limbed

• अर्कः (arkaḥ) - the sun, a ray of light

• इव (iva) - like, as if, similar to

• ध्वान्तम् (dhvāntam) - darkness, gloom

• सत्संपर्कः (satsaṁparkaḥ) - good association, contact with the virtuous

• इव (iva) - like, as if, similar to

• अगुणम् (aguṇam) - vice, devoid of qualities, fault

Words meanings and morphology

समुपेत्य (samupetya) - having approached, having arrived

(indeclinable)

Prefixes: sam+upa

Root: i (class 2)

Note: absolutive (gerund)

अपिबत् (apibat) - drank, consumed

(verb)

3rd person , singular, active, past imperfect (laṅ) of pā

Root: pā (class 1)

Note: The 'a' is the augment for past tense (Laṅ L-affix).

रुद्रः (rudraḥ) - Rudra (a deity, a fierce form of Śiva)

(proper noun)

Nominative, masculine, singular of rudra

rudra - Rudra, howler, a fierce deity often identified with Śiva

Root: rud

सः (saḥ) - He (Rudra) (he, that)

(pronoun)

Nominative, masculine, singular of tad

tad - that, he, it

मुहूर्तेन (muhūrtena) - in a moment, within a muhūrta (a unit of time)

(noun)

Instrumental, masculine, singular of muhūrta

muhūrta - moment, instant, a specific division of time (48 minutes)

Note: denoting time within which an action occurs

तत् (tat) - that (referring to the water)

(pronoun)

Accusative, neuter, singular of tad

tad - that, he, it

पयः (payaḥ) - water (the ocean) (water, milk)

(noun)

Accusative, neuter, singular of payas

payas - water, milk, fluid, juice, sap

कृष्णाङ्गः (kṛṣṇāṅgaḥ) - dark-bodied, black-limbed

(adjective)

Nominative, masculine, singular of kṛṣṇāṅga

kṛṣṇāṅga - dark-bodied, black-limbed, having dark parts

Compound type : bahuvrīhi (kṛṣṇa+aṅga)

• kṛṣṇa – black, dark, dark-blue, dark-brown
  adjective
• aṅga – body, limb, part, constituent
  noun (neuter)

Note: modifies 'rudraḥ'

अर्कः (arkaḥ) - the sun, a ray of light

(noun)

Nominative, masculine, singular of arka

arka - the sun, ray, light, hymn, praise

Root: arc

इव (iva) - like, as if, similar to

(indeclinable)

ध्वान्तम् (dhvāntam) - darkness, gloom

(noun)

Accusative, neuter, singular of dhvānta

dhvānta - darkness, gloom, obscurity

Root: dhvan

सत्संपर्कः (satsaṁparkaḥ) - good association, contact with the virtuous

(noun)

Nominative, masculine, singular of satsaṃparka

satsaṁparka - good association, contact with the virtuous or holy

Compound type : ṣaṣṭhī-tatpuruṣa (sat+saṃparka)

• sat – good, virtuous, existing, real
  adjective
  Present Active Participle
  present participle of the verb 'as' (to be)
  Root: as (class 2)
• saṃparka – contact, association, union, intercourse
  noun (masculine)
  Prefixes: sam+pari
  Root: spṛś

इव (iva) - like, as if, similar to

(indeclinable)

अगुणम् (aguṇam) - vice, devoid of qualities, fault

(noun)

Accusative, neuter, singular of aguṇa

aguṇa - devoid of qualities, fault, defect, vice, bad quality

Compound type : nañ-tatpuruṣa (a+guṇa)

• a – not, non-, un-
  indeclinable
• guṇa – quality, virtue, attribute, constituent of nature
  noun (masculine)