वाल्मीकि-रामायणम् vālmīki-rāmāyaṇam - book-5, chapter-20, verse-20

असंदेशात्तु रामस्य तपसश्चानुपालनात् ।
न त्वां कुर्मि दशग्रीव भस्म भस्मार्हतेजसा ॥२०॥

20. asaṃdeśāttu rāmasya tapasaścānupālanāt ,
na tvāṃ kurmi daśagrīva bhasma bhasmārhatejasā.

20. asaṃdeśāt tu rāmasya tapasaḥ ca anupālanāt na
tvām kurmi daśagrīva bhasma bhasmārhatejasā

20. rāmasya asaṃdeśāt tu tapasaḥ ca anupālanāt
tvām daśagrīva bhasmārhatejasā bhasma na kurmi

20. Indeed, because of Rama's explicit command and my observance of asceticism (tapas), I do not reduce you, O Daśagrīva, to ashes with a power capable of burning one to ashes.

Words meanings summery:

• असंदेशात् (asaṁdeśāt) - because of a specific command (from a command, from an instruction)

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

• रामस्य (rāmasya) - of Rama

• तपसः (tapasaḥ) - of my ascetic practice (of austerity, from austerity)

• च (ca) - and

• अनुपालनात् (anupālanāt) - due to the observance (of austerity) (from the observance, from the protection)

• न (na) - not

• त्वाम् (tvām) - you (Ravana) (you (accusative))

• कुर्मि (kurmi) - I reduce (you to ashes) (I do, I make)

• दशग्रीव (daśagrīva) - O Ravana (O Ten-necked one)

• भस्म (bhasma) - ashes

• भस्मार्हतेजसा (bhasmārhatejasā) - with power deserving to be turned to ashes, with ash-worthy power

Words meanings and morphology

असंदेशात् (asaṁdeśāt) - because of a specific command (from a command, from an instruction)

(noun)

Ablative, masculine, singular of asaṃdeśa

asaṁdeśa - command, instruction, message

Prefixes: a+sam

Root: diś (class 6)

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

(indeclinable)

रामस्य (rāmasya) - of Rama

(proper noun)

Genitive, masculine, singular of rāma

rāma - Rama, pleasing, charming

तपसः (tapasaḥ) - of my ascetic practice (of austerity, from austerity)

(noun)

Genitive, neuter, singular of tapas

tapas - austerity, asceticism, heat, penance

Root: tap (class 1)

च (ca) - and

(indeclinable)

अनुपालनात् (anupālanāt) - due to the observance (of austerity) (from the observance, from the protection)

(noun)

Ablative, neuter, singular of anupālana

anupālana - observance, protection, maintenance

Prefix: anu

Root: pāl (class 10)

न (na) - not

(indeclinable)

त्वाम् (tvām) - you (Ravana) (you (accusative))

(pronoun)

Accusative, singular of yuṣmad

yuṣmad - you

कुर्मि (kurmi) - I reduce (you to ashes) (I do, I make)

(verb)

1st person , singular, active, present (laṭ) of kṛ

Root: kṛ (class 8)

दशग्रीव (daśagrīva) - O Ravana (O Ten-necked one)

(proper noun)

Vocative, masculine, singular of daśagrīva

daśagrīva - having ten necks (an epithet of Ravana)

Compound type : bahuvrīhi (daśa+grīvā)

• daśa – ten
  numeral
• grīvā – neck
  noun (feminine)

भस्म (bhasma) - ashes

(noun)

Accusative, neuter, singular of bhasma

bhasma - ashes, powder

Root: bhas (class 1)

भस्मार्हतेजसा (bhasmārhatejasā) - with power deserving to be turned to ashes, with ash-worthy power

(noun)

Instrumental, neuter, singular of bhasmārhatejas

bhasmārhatejas - power worthy of reducing to ashes

Compound type : tatpuruṣa (bhasmārha+tejas)

• bhasmārha – deserving of ashes, ash-worthy
  adjective
• tejas – power, might, splendor, spiritual energy
  noun (neuter)