योगवासिष्ठः yogavāsiṣṭhaḥ - book-1, chapter-7, verse-23

दशरात्रश्च मे यज्ञो यस्मिन्रामेण राक्षसाः ।
हन्तव्या विघ्नकर्तारो मम यज्ञस्य वैरिणः ॥ २३ ॥

daśarātraśca me yajño yasminrāmeṇa rākṣasāḥ ,
hantavyā vighnakartāro mama yajñasya vairiṇaḥ 23

23. daśarātraḥ ca me yajñaḥ yasmin rāmeṇa rākṣasāḥ
hantavyāḥ vighnakartāraḥ mama yajñasya vairiṇaḥ

23. And my (yajña) sacrifice is for ten nights, during which the rākṣasas, the obstructors and enemies of my (yajña) sacrifice, ought to be slain by Rāma.

Words meanings summery:

• दशरात्रः (daśarātraḥ) - a period of ten nights, a ten-night sacrifice

• च (ca) - and, also

• मे (me) - my, to me, for me

• यज्ञः (yajñaḥ) - (yajña) sacrifice (sacrifice, ritual)

• यस्मिन् (yasmin) - in which

• रामेण (rāmeṇa) - by Rāma

• राक्षसाः (rākṣasāḥ) - demons, rākṣasas

• हन्तव्याः (hantavyāḥ) - ought to be killed, killable

• विघ्नकर्तारः (vighnakartāraḥ) - obstructors, creators of obstacles

• मम (mama) - my, of me

• यज्ञस्य (yajñasya) - of my (yajña) sacrifice (of the sacrifice, of the ritual)

• वैरिणः (vairiṇaḥ) - enemies, adversaries

Words meanings and morphology

दशरात्रः (daśarātraḥ) - a period of ten nights, a ten-night sacrifice

(noun)

Nominative, masculine, singular of daśarātra

daśarātra - a period of ten nights; a ten-night sacrifice

Compound type : dvigu (daśa+rātra)

• daśa – ten
  numeral
• rātra – night
  noun (neuter)

च (ca) - and, also

(indeclinable)

मे (me) - my, to me, for me

(pronoun)

Genitive, singular of asmad

asmad - I, we

यज्ञः (yajñaḥ) - (yajña) sacrifice (sacrifice, ritual)

(noun)

Nominative, masculine, singular of yajña

yajña - sacrifice, worship, religious rite (yajña)

From √yaj (to sacrifice)

Root: yaj (class 1)

यस्मिन् (yasmin) - in which

(pronoun)

Locative, masculine, singular of yad

yad - who, which, what

रामेण (rāmeṇa) - by Rāma

(proper noun)

Instrumental, masculine, singular of rāma

rāma - Rāma (a proper name, hero of the Rāmāyaṇa)

राक्षसाः (rākṣasāḥ) - demons, rākṣasas

(noun)

Nominative, masculine, plural of rākṣasa

rākṣasa - a rākṣasa, demon, evil spirit

हन्तव्याः (hantavyāḥ) - ought to be killed, killable

(adjective)

Nominative, masculine, plural of hantavya

hantavya - to be killed, killable, ought to be killed

Gerundive

From √han (to strike, kill) with suffix -tavya

Root: han (class 2)

विघ्नकर्तारः (vighnakartāraḥ) - obstructors, creators of obstacles

(noun)

Nominative, masculine, plural of vighnakartṛ

vighnakartṛ - creator of obstacles, obstructor

Compound type : tatpurusha (vighna+kartṛ)

• vighna – obstacle, impediment, obstruction
  noun (masculine)
  Prefix: vi
  Root: han (class 2)
• kartṛ – doer, maker, agent, creator
  noun (masculine)
  Agent noun from √kṛ (to do)
  Root: kṛ (class 8)

मम (mama) - my, of me

(pronoun)

Genitive, singular of asmad

asmad - I, we

यज्ञस्य (yajñasya) - of my (yajña) sacrifice (of the sacrifice, of the ritual)

(noun)

Genitive, masculine, singular of yajña

yajña - sacrifice, worship, religious rite (yajña)

From √yaj (to sacrifice)

Root: yaj (class 1)

वैरिणः (vairiṇaḥ) - enemies, adversaries

(noun)

Nominative, masculine, plural of vairin

vairin - enemy, adversary

From vaira (enmity)