योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-64, verse-27

क्वचित्तपद्दिनकरजनताचारसुन्दरः ।
क्वचिन्नैशतमोगेहनृत्यन्मत्तनिशाचरः ॥ २७ ॥

kvacittapaddinakarajanatācārasundaraḥ ,
kvacinnaiśatamogehanṛtyanmattaniśācaraḥ 27

27. kvacit tapatdinakarajanatācārasundaraḥ
kvacit naiśatamogehanṛtyanmattaniśācaraḥ

27. kvacit tapatdinakarajanatācārasundaraḥ
kvacit naiśatamogehanṛtyanmattaniśācaraḥ

27. Sometimes, it appears beautiful through the virtuous conduct of its people, even under the scorching sun. At other times, it hosts intoxicated night-prowlers (niśācara) dancing within the abodes of nocturnal darkness.

Words meanings summery:

• क्वचित् (kvacit) - sometimes, somewhere, in some place, at some time

• तपत्दिनकरजनताचारसुन्दरः (tapatdinakarajanatācārasundaraḥ) - whose beauty lies in the conduct of its people even under the scorching sun

• क्वचित् (kvacit) - sometimes, somewhere, in some place, at some time

• नैशतमोगेहनृत्यन्मत्तनिशाचरः (naiśatamogehanṛtyanmattaniśācaraḥ) - where intoxicated night-prowlers (niśācara) dance in the abodes of nocturnal darkness

Words meanings and morphology

क्वचित् (kvacit) - sometimes, somewhere, in some place, at some time

(indeclinable)

From interrogative pronoun 'ka' (who/what) + suffix 'cit'

तपत्दिनकरजनताचारसुन्दरः (tapatdinakarajanatācārasundaraḥ) - whose beauty lies in the conduct of its people even under the scorching sun

(adjective)

Nominative, masculine, singular of tapatdinakarajanatācārasundara

tapatdinakarajanatācārasundara - whose beauty lies in the conduct of its people even under the scorching sun

Compound type : Bahuvrīhi (tapat+dinakara+janatā+ācāra+sundara)

• tapat – burning, scorching, heating
  adjective
  Present Active Participle
  Derived from root tap (class 1)
  Root: tap (class 1)
• dinakara – sun (day-maker)
  noun (masculine)
  Compound: dina (day) + kara (maker)
• janatā – multitude of people, community, mankind
  noun (feminine)
  Abstract noun formed from jana (people) with suffix -tā
• ācāra – conduct, custom, practice, virtuous behavior
  noun (masculine)
  Derived from root car (to move) with upasarga ā-
  Prefix: ā
  Root: car (class 1)
• sundara – beautiful, lovely, handsome, excellent
  adjective (masculine)

क्वचित् (kvacit) - sometimes, somewhere, in some place, at some time

(indeclinable)

From interrogative pronoun 'ka' (who/what) + suffix 'cit'

नैशतमोगेहनृत्यन्मत्तनिशाचरः (naiśatamogehanṛtyanmattaniśācaraḥ) - where intoxicated night-prowlers (niśācara) dance in the abodes of nocturnal darkness

(adjective)

Nominative, masculine, singular of naiśatamogehanṛtyanmattaniśācara

naiśatamogehanṛtyanmattaniśācara - where intoxicated night-prowlers (niśācara) dance in the abodes of nocturnal darkness

Compound type : Bahuvrīhi (naiśa+tamaḥ+geha+nṛtyat+matta+niśācara)

• naiśa – nocturnal, belonging to the night
  adjective
  Derived from niśā (night)
• tamaḥ – darkness, gloom
  noun (neuter)
• geha – house, abode, dwelling
  noun (neuter)
• nṛtyat – dancing
  adjective
  Present Active Participle
  Derived from root nṛt (class 4)
  Root: nṛt (class 4)
• matta – intoxicated, maddened, passionate, joyful
  adjective
  Past Passive Participle
  Derived from root mad (class 4)
  Root: mad (class 4)
• niśācara – night-prowler, demon, goblin, rākṣasa
  noun (masculine)
  Compound: niśā (night) + cara (mover)