योगवासिष्ठः yogavāsiṣṭhaḥ - book-4, chapter-14, verse-2

तौ शैलादवरोहन्तौ दृष्टवन्तौ महाद्युती ।
नवहैमलताजालकुञ्जसुप्तनभश्चरान् ॥ २ ॥

tau śailādavarohantau dṛṣṭavantau mahādyutī ,
navahaimalatājālakuñjasuptanabhaścarān 2

2. tau śailāt avarohantau dṛṣṭavantau mahādyutī
navahaimalatājālakunjasuptanabhaścarān

2. mahādyutī tau śailāt avarohantau (santaḥ),
navahaimalatājālakunjasuptanabhaścarān dṛṣṭavantau.

2. Those two (Kāla and Bhṛgu), of great splendor, while descending from the mountain, saw celestial beings (or birds) sleeping in the dense bowers, which were like networks of new, golden creepers.

Words meanings summery:

• तौ (tau) - those two (Kāla and Bhṛgu) (those two)

• शैलात् (śailāt) - from the mountain

• अवरोहन्तौ (avarohantau) - while descending (descending, climbing down)

• दृष्टवन्तौ (dṛṣṭavantau) - saw (saw, having seen)

• महाद्युती (mahādyutī) - of great splendor (of great splendor, very brilliant)

• नवहैमलताजालकुन्जसुप्तनभश्चरान् (navahaimalatājālakunjasuptanabhaścarān) - celestial beings (or birds) sleeping in the dense bowers, which were like networks of new, golden creepers (sky-wanderers sleeping in groves that are networks of new golden creepers)

Words meanings and morphology

तौ (tau) - those two (Kāla and Bhṛgu) (those two)

(pronoun)

Nominative, masculine, dual of tad

tad - that, he, she, it

Demonstrative pronoun.

Note: Subject of dṛṣṭavantau.

शैलात् (śailāt) - from the mountain

(noun)

Ablative, masculine, singular of śaila

śaila - mountain, rock, hill

From śilā (rock).

Note: Indicates the point of departure.

अवरोहन्तौ (avarohantau) - while descending (descending, climbing down)

(adjective)

Nominative, masculine, dual of avarohant

avarohant - descending, going down

Present Active Participle

Derived from root ruh with prefix ava.

Prefix: ava

Root: ruh (class 1)

Note: Agrees with tau. Indicates simultaneous action.

दृष्टवन्तौ (dṛṣṭavantau) - saw (saw, having seen)

(adjective)

Nominative, masculine, dual of dṛṣṭavat

dṛṣṭavat - having seen, one who has seen

Past Active Participle

Derived from root dṛś (to see) with suffix ktavat.

Root: dṛś (class 1)

Note: Agrees with tau.

महाद्युती (mahādyutī) - of great splendor (of great splendor, very brilliant)

(adjective)

Nominative, masculine, dual of mahādyuti

mahādyuti - great brilliance, very splendid

Compound: mahā (great) + dyuti (splendor).

Compound type : bahuvrīhi (mahā+dyuti)

• mahā – great, large, mighty
  adjective
  Feminine stem of mahat.
• dyuti – light, splendor, brightness, radiance
  noun (feminine)
  From root dyut (to shine).
  Root: dyut (class 1)

Note: Agrees with tau.

नवहैमलताजालकुन्जसुप्तनभश्चरान् (navahaimalatājālakunjasuptanabhaścarān) - celestial beings (or birds) sleeping in the dense bowers, which were like networks of new, golden creepers (sky-wanderers sleeping in groves that are networks of new golden creepers)

(noun)

Accusative, masculine, plural of navahaimalatājālakunjasuptanabhaścara

navahaimalatājālakunjasuptanabhaścara - sky-wanderer sleeping in a bower of new golden creeper networks

Tatpurusha compound describing the nature of the nabhaścara.

Compound type : tatpurusha (nava+haima+latājāla+kuñja+supta+nabhaścara)

• nava – new, fresh, young
  adjective (neuter)
• haima – golden, made of gold, relating to winter
  adjective (neuter)
  Derived from heman (gold).
• latājāla – network/mass of creepers
  noun (neuter)
  Compound: latā (creeper) + jāla (net/mass).
• kuñja – bower, thicket, grove
  noun (masculine / neuter)
  Root: kuñj (class 1)
• supta – sleeping, asleep
  adjective (masculine)
  Past Passive Participle
  From root svap (to sleep).
  Root: svap (class 2)
• nabhaścara – sky-wanderer, celestial being, bird
  noun (masculine)
  Compound: nabhas (sky) + cara (moving/wandering).
  Root: car (class 1)

Note: Object of dṛṣṭavantau.