योगवासिष्ठः yogavāsiṣṭhaḥ - book-5, chapter-31, verse-23

तद्दोर्वनघनच्छायालब्धविश्रान्तयः सुराः ।
न कदाचन तप्यन्ते हिमाद्रेरिव सानवः ॥ २३ ॥

taddorvanaghanacchāyālabdhaviśrāntayaḥ surāḥ ,
na kadācana tapyante himādreriva sānavaḥ 23

23. taddorvanaghanacchāyālabdhaviśrāntayaḥ surāḥ
na kadācana tapyante himādreḥ iva sānavaḥ

23. taddorvanaghanacchāyālabdhaviśrāntayaḥ surāḥ
himādreḥ sānavaḥ iva kadācana na tapyante

23. The gods, who found repose in the dense shade of his multitude of arms, never experience suffering, just like the peaks of the Himalaya (himādri) never feel the heat.

Words meanings summery:

• तद्दोर्वनघनच्छायालब्धविश्रान्तयः (taddorvanaghanacchāyālabdhaviśrāntayaḥ) - Describing the gods (surāḥ) who are protected and find peace under Hari's (tad) mighty arms. (those who obtained rest in the dense shade of his arm-forest/multitude of arms.)

• सुराः (surāḥ) - gods, deities, celestial beings.

• न (na) - Negates the verb tapyante, meaning 'never suffer'. (not, no.)

• कदाचन (kadācana) - Reinforces the negation, meaning 'never at all'. (ever, at any time, never (with negation).)

• तप्यन्ते (tapyante) - They do not suffer any kind of distress or heat. (are tormented, suffer, feel pain.)

• हिमाद्रेः (himādreḥ) - The mountain range used as a comparison for its coolness and stability. (of the Himalaya, of the mountain of snow.)

• इव (iva) - Introduces the comparison with the peaks of the Himalaya. (like, as, as if.)

• सानवः (sānavaḥ) - The mountain peaks which remain cool and undisturbed. (peaks, summits.)

Words meanings and morphology

तद्दोर्वनघनच्छायालब्धविश्रान्तयः (taddorvanaghanacchāyālabdhaviśrāntayaḥ) - Describing the gods (surāḥ) who are protected and find peace under Hari's (tad) mighty arms. (those who obtained rest in the dense shade of his arm-forest/multitude of arms.)

(adjective)

Nominative, masculine, plural of taddorvanaghanacchāyālabdhaviśrānti

taddorvanaghanacchāyālabdhaviśrānti - those who have obtained rest in the dense shade of his powerful arms.

Compound type : Bahuvrīhi (tad+dos+vana+ghana+cchāyā+labdha+viśrānti)

• tad – that, his.
  pronoun (neuter)
• dos – arm.
  noun (neuter)
• vana – forest, multitude, strength.
  noun (neuter)
  Root: van (class 1)
• ghana – dense, thick, solid, cloud.
  adjective (masculine)
  Root: han (class 2)
• cchāyā – shade, shadow, reflection, luster.
  noun (feminine)
  Root: chā
• labdha – obtained, gained, acquired.
  adjective (masculine)
  Past Passive Participle
  Derived from root labh (to obtain) with suffix kta.
  Root: labh (class 1)
• viśrānti – rest, repose, tranquility, cessation.
  noun (feminine)
  From root śram (to be weary) with prefix vi + ti suffix.
  Prefix: vi
  Root: śram (class 4)

Note: Qualifies surāḥ.

सुराः (surāḥ) - gods, deities, celestial beings.

(noun)

Nominative, masculine, plural of sura

sura - god, deity, celestial being.

Note: Subject of tapyante.

न (na) - Negates the verb tapyante, meaning 'never suffer'. (not, no.)

(indeclinable)

कदाचन (kadācana) - Reinforces the negation, meaning 'never at all'. (ever, at any time, never (with negation).)

(indeclinable)

kadā (when) + cana (indefinite particle).

तप्यन्ते (tapyante) - They do not suffer any kind of distress or heat. (are tormented, suffer, feel pain.)

(verb)

3rd person , plural, middle/passive, present (laṭ) of tap

Present Middle/Passive

From root tap (to heat, suffer) in middle/passive voice, ya affix.

Root: tap (class 1)

हिमाद्रेः (himādreḥ) - The mountain range used as a comparison for its coolness and stability. (of the Himalaya, of the mountain of snow.)

(proper noun)

Genitive, masculine, singular of himādri

himādri - Himalaya (mountain of snow).

hima (snow) + adri (mountain).

Compound type : Tatpuruṣa (hima+adri)

• hima – snow, cold, frost.
  noun (neuter)
  Root: hi (class 5)
• adri – mountain, rock.
  noun (masculine)
  From root ad (to eat, consume). Here, referring to a mountain.
  Root: ad (class 1)

इव (iva) - Introduces the comparison with the peaks of the Himalaya. (like, as, as if.)

(indeclinable)

सानवः (sānavaḥ) - The mountain peaks which remain cool and undisturbed. (peaks, summits.)

(noun)

Nominative, masculine, plural of sānu

sānu - peak, summit, ridge (of a mountain), table-land.