योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-91, verse-40

क्वचिदुल्मुकदन्तेन मया ज्वालाभुजात्मना ।
विलोलधूमावर्तोग्रकुन्तलेनाकुलौजसा ॥ ४० ॥

kvacidulmukadantena mayā jvālābhujātmanā ,
viloladhūmāvartograkuntalenākulaujasā 40

40. kvacit ulmukadantena mayā jvālābhujātmanā
viloladhūmāvartograkuntalena ākulaujasā

40. kvacit mayā ulmukadantena jvālābhujātmanā
viloladhūmāvartograkuntalena ākulaujasā

40. Sometimes, by me, whose teeth were like flaming brands, whose essence (ātman) manifested as arms of flame, whose formidable locks of hair were turbulent eddies of smoke, and whose power was agitated.

Words meanings summery:

• क्वचित् (kvacit) - sometimes, somewhere

• उल्मुकदन्तेन (ulmukadantena) - by me, whose teeth were like flaming brands (by one whose teeth are firebrands)

• मया (mayā) - by me

• ज्वालाभुजात्मना (jvālābhujātmanā) - whose essence (ātman) manifested as arms of flame (by one whose self/essence is arms of flame)

• विलोलधूमावर्तोग्रकुन्तलेन (viloladhūmāvartograkuntalena) - whose formidable locks of hair were turbulent eddies of smoke (by one whose fierce locks of hair are swirling eddies of smoke)

• आकुलौजसा (ākulaujasā) - whose power was agitated (by one whose power is agitated, by one of agitated might)

Words meanings and morphology

क्वचित् (kvacit) - sometimes, somewhere

(indeclinable)

उल्मुकदन्तेन (ulmukadantena) - by me, whose teeth were like flaming brands (by one whose teeth are firebrands)

(adjective)

Instrumental, masculine, singular of ulmukadanta

ulmukadanta - having teeth like firebrands

Compound type : bahuvrīhi (ulmuka+danta)

• ulmuka – firebrand, flaming torch, meteor
  noun (masculine)
• danta – tooth, tusk
  noun (masculine)

मया (mayā) - by me

(pronoun)

Instrumental, singular of asmad

asmad - I, we

ज्वालाभुजात्मना (jvālābhujātmanā) - whose essence (ātman) manifested as arms of flame (by one whose self/essence is arms of flame)

(adjective)

Instrumental, masculine, singular of jvālābhujātman

jvālābhujātman - having arms of flame as one's nature/self

Compound type : bahuvrīhi (jvālā+bhuja+ātman)

• jvālā – flame, blaze
  noun (feminine)
• bhuja – arm, hand
  noun (masculine)
• ātman – self, soul, spirit, essence, nature
  noun (masculine)

विलोलधूमावर्तोग्रकुन्तलेन (viloladhūmāvartograkuntalena) - whose formidable locks of hair were turbulent eddies of smoke (by one whose fierce locks of hair are swirling eddies of smoke)

(adjective)

Instrumental, masculine, singular of viloladhūmāvartograkuntala

viloladhūmāvartograkuntala - having fierce locks of hair that are agitated eddies of smoke

Compound type : bahuvrīhi (vilola+dhūma+āvarta+ugra+kuntala)

• vilola – agitated, trembling, swaying, restless
  adjective
  Prefix: vi
• dhūma – smoke, vapor
  noun (masculine)
• āvarta – whirlpool, eddy, convolution
  noun (masculine)
  Prefix: ā
• ugra – fierce, terrible, formidable, mighty
  adjective
• kuntala – lock of hair, curl
  noun (masculine)

आकुलौजसा (ākulaujasā) - whose power was agitated (by one whose power is agitated, by one of agitated might)

(adjective)

Instrumental, masculine, singular of ākulaujas

ākulaujas - having agitated or disturbed power/might

Compound type : bahuvrīhi (ākula+ojas)

• ākula – agitated, disturbed, confused, restless
  adjective
  Prefix: ā
• ojas – might, power, vigor, energy
  noun (neuter)