महाभारतः mahābhārataḥ - book-10, chapter-8, verse-126

निशाचराणां सत्त्वानां स रात्रिर्हर्षवर्धिनी ।
आसीन्नरगजाश्वानां रौद्री क्षयकरी भृशम् ॥१२६॥

126. niśācarāṇāṁ sattvānāṁ sa rātrirharṣavardhinī ,
āsīnnaragajāśvānāṁ raudrī kṣayakarī bhṛśam.

126. niśācarāṇām sattvānām sā rātriḥ harṣa-vardhinī
āsīt nara-gaja-aśvānām raudrī kṣaya-karī bhṛśam

126. sā rātriḥ niśācarāṇām sattvānām harṣa-vardhinī
āsīt; nara-gaja-aśvānām raudrī kṣaya-karī bhṛśam

126. That night was indeed a joy-increasing one for the night-roaming beings, but for men, elephants, and horses, it was exceedingly dreadful and destructive.

Words meanings summery:

• निशाचराणाम् (niśācarāṇām) - of the night-roaming beings, of demons

• सत्त्वानाम् (sattvānām) - of beings, of creatures

• सा (sā) - that, she

• रात्रिः (rātriḥ) - night

• हर्ष-वर्धिनी (harṣa-vardhinī) - joy-increasing, delight-enhancing

• आसीत् (āsīt) - was, existed

• नर-गज-अश्वानाम् (nara-gaja-aśvānām) - for men, elephants, and horses

• रौद्री (raudrī) - dreadful, terrible, fierce

• क्षय-करी (kṣaya-karī) - causing destruction, destructive

• भृशम् (bhṛśam) - exceedingly, greatly, much

Words meanings and morphology

निशाचराणाम् (niśācarāṇām) - of the night-roaming beings, of demons

(noun)

Genitive, masculine, plural of niśācara

niśācara - night-walker, night-rover, demon, Rākṣasa

Compound type : tatpuruṣa (niśā+cara)

• niśā – night
  noun (feminine)
• cara – moving, roaming, going
  adjective (masculine)
  Root: car (class 1)

सत्त्वानाम् (sattvānām) - of beings, of creatures

(noun)

Genitive, neuter, plural of sattva

sattva - being, creature, essence, reality, goodness

सा (sā) - that, she

(pronoun)

Nominative, feminine, singular of tad

tad - that, she, it

रात्रिः (rātriḥ) - night

(noun)

Nominative, feminine, singular of rātri

rātri - night

हर्ष-वर्धिनी (harṣa-vardhinī) - joy-increasing, delight-enhancing

(adjective)

Nominative, feminine, singular of harṣa-vardhinī

harṣa-vardhinī - joy-increasing, causing delight

Compound type : tatpuruṣa (harṣa+vardhinī)

• harṣa – joy, delight, pleasure
  noun (masculine)
• vardhinī – increasing, promoting, growing (feminine form of vardhin)
  adjective (feminine)
  Root: vṛdh (class 1)

आसीत् (āsīt) - was, existed

(verb)

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

Root: as (class 2)

नर-गज-अश्वानाम् (nara-gaja-aśvānām) - for men, elephants, and horses

(noun)

Genitive, masculine, plural of nara-gaja-aśva

nara-gaja-aśva - men, elephants, and horses (collectively)

Compound type : dvandva (nara+gaja+aśva)

• nara – man, human being
  noun (masculine)
• gaja – elephant
  noun (masculine)
• aśva – horse
  noun (masculine)

रौद्री (raudrī) - dreadful, terrible, fierce

(adjective)

Nominative, feminine, singular of raudra

raudra - dreadful, terrible, fierce, belonging to Rudra

क्षय-करी (kṣaya-karī) - causing destruction, destructive

(adjective)

Nominative, feminine, singular of kṣaya-karī

kṣaya-karī - causing destruction, destructive

Compound type : tatpuruṣa (kṣaya+karī)

• kṣaya – destruction, decay, loss
  noun (masculine)
• karī – making, doing, causing (feminine form of karin)
  adjective (feminine)
  Root: kṛ (class 8)

भृशम् (bhṛśam) - exceedingly, greatly, much

(indeclinable)