वाल्मीकि-रामायणम् vālmīki-rāmāyaṇam - book-1, chapter-19, verse-18

यदा स्वयं न यज्ञस्य विघ्नकर्ता महाबलः ।
तेन संचोदितौ तौ तु राक्षसौ सुमहा बलौ ।
मारीचश्च सुबाहुश्च यज्ञविघ्नं करिष्यतः ॥१८॥

18. yadā svayaṃ na yajñasya vighnakartā mahābalaḥ ,
tena saṃcoditau tau tu rākṣasau sumahā balau ,
mārīcaśca subāhuśca yajñavighnaṃ kariṣyataḥ.

18. yadā svayam na yajñasya vighnakartā
mahābalaḥ tena saṃcoditau tau
tu rākṣasau sumahābalau mārīcaḥ ca
subāhuḥ ca yajñavighnam kariṣyataḥ

18. yadā mahābalaḥ svayam yajñasya
vighnakartā na tena saṃcoditau
sumahābalau tau rākṣasau mārīcaḥ ca
subāhuḥ ca tu yajñavighnam kariṣyataḥ

18. When that immensely powerful being himself does not directly obstruct the Vedic ritual (yajña), then, incited by him, those two exceedingly mighty demons, Maricha and Subahu, will indeed create obstacles for the Vedic ritual (yajña).

Words meanings summery:

• यदा (yadā) - when

• स्वयम् (svayam) - oneself, by oneself, personally

• न (na) - not, no

• यज्ञस्य (yajñasya) - of the Vedic ritual (yajña) (of the Vedic ritual, of the offering)

• विघ्नकर्ता (vighnakartā) - obstructor, creator of obstacles

• महाबलः (mahābalaḥ) - [Ravana, the demon king] (very powerful, exceedingly strong)

• तेन (tena) - [by that powerful being, Ravana] (by him, by that)

• संचोदितौ (saṁcoditau) - incited, urged, impelled

• तौ (tau) - those two

• तु (tu) - but, indeed, on the other hand

• राक्षसौ (rākṣasau) - two demons

• सुमहाबलौ (sumahābalau) - exceedingly mighty, extremely powerful (dual)

• मारीचः (mārīcaḥ) - Maricha

• च (ca) - and

• सुबाहुः (subāhuḥ) - Subahu

• च (ca) - and

• यज्ञविघ्नम् (yajñavighnam) - obstruction of the Vedic ritual (yajña) (obstruction of the Vedic ritual, obstacle to the sacrifice)

• करिष्यतः (kariṣyataḥ) - will do, will perform, will cause

Words meanings and morphology

यदा (yadā) - when

(indeclinable)

स्वयम् (svayam) - oneself, by oneself, personally

(indeclinable)

Reflexive adverbial use of a pronoun

न (na) - not, no

(indeclinable)

यज्ञस्य (yajñasya) - of the Vedic ritual (yajña) (of the Vedic ritual, of the offering)

(noun)

Genitive, masculine, singular of yajña

yajña - Vedic ritual, offering, sacrifice, devotion

From root yaj (to worship, offer)

Root: yaj (class 1)

विघ्नकर्ता (vighnakartā) - obstructor, creator of obstacles

(noun)

Nominative, masculine, singular of vighnakartṛ

vighnakartṛ - obstructor, hinderer

Agent noun

Compound of vighna (obstacle) and kartṛ (doer)

Compound type : tatpuruṣa (vighna+kartṛ)

• vighna – obstacle, impediment, hindrance
  noun (masculine)
  From vi-han (to strike apart, to hinder)
  Prefix: vi
  Root: han (class 2)
• kartṛ – doer, maker, agent
  noun (masculine)
  Agent noun
  From root kṛ (to do, to make)
  Root: kṛ (class 8)

महाबलः (mahābalaḥ) - [Ravana, the demon king] (very powerful, exceedingly strong)

(adjective)

Nominative, masculine, singular of mahābala

mahābala - greatly powerful, strong

Compound of mahā (great) and bala (strength)

Compound type : karmadhāraya (mahā+bala)

• mahā – great, mighty
  adjective (feminine)
• bala – strength, power, force
  noun (neuter)

तेन (tena) - [by that powerful being, Ravana] (by him, by that)

(pronoun)

Instrumental, masculine, singular of tad

tad - that, he, she, it

संचोदितौ (saṁcoditau) - incited, urged, impelled

(adjective)

Nominative, masculine, dual of saṃcodita

saṁcodita - incited, urged, set in motion

Past Passive Participle

From root cud (to urge, impel) with prefix sam-

Prefix: sam

Root: cud (class 10)

तौ (tau) - those two

(pronoun)

Nominative, masculine, dual of tad

tad - that, he, she, it

तु (tu) - but, indeed, on the other hand

(indeclinable)

राक्षसौ (rākṣasau) - two demons

(noun)

Nominative, masculine, dual of rākṣasa

rākṣasa - demon, evil spirit, monster

सुमहाबलौ (sumahābalau) - exceedingly mighty, extremely powerful (dual)

(adjective)

Nominative, masculine, dual of sumahābala

sumahābala - exceedingly powerful, very strong

Compound of su (prefix, good/very), mahā (great), and bala (strength)

Compound type : bahuvrīhi (su+mahābala)

• su – good, well, very, exceedingly
  indeclinable
  Prefix for intensification
• mahābala – greatly powerful, strong
  adjective (masculine)
  Compound of mahā (great) and bala (strength)

मारीचः (mārīcaḥ) - Maricha

(proper noun)

Nominative, masculine, singular of mārīca

mārīca - Name of a demon, son of Tataka

च (ca) - and

(indeclinable)

सुबाहुः (subāhuḥ) - Subahu

(proper noun)

Nominative, masculine, singular of subāhu

subāhu - Name of a demon, brother of Maricha

च (ca) - and

(indeclinable)

यज्ञविघ्नम् (yajñavighnam) - obstruction of the Vedic ritual (yajña) (obstruction of the Vedic ritual, obstacle to the sacrifice)

(noun)

Accusative, neuter, singular of yajñavighna

yajñavighna - obstruction of a sacrifice, obstacle to a Vedic ritual

Compound of yajña (Vedic ritual) and vighna (obstacle)

Compound type : tatpuruṣa (yajña+vighna)

• yajña – Vedic ritual, offering, sacrifice
  noun (masculine)
  From root yaj (to worship, offer)
  Root: yaj (class 1)
• vighna – obstacle, impediment, hindrance
  noun (masculine)
  From vi-han (to strike apart, to hinder)
  Prefix: vi
  Root: han (class 2)

करिष्यतः (kariṣyataḥ) - will do, will perform, will cause

(verb)

3rd person , dual, active, future (lṛṭ) of kṛ

Future tense, 3rd person dual active

Root verb, 8th class, Skr. karoti, kurute

Root: kṛ (class 8)