वाल्मीकि-रामायणम् vālmīki-rāmāyaṇam - book-1, chapter-25, verse-4

सो ऽहं पितुर्वचः श्रुत्वा शासनाद्ब्रह्म वादिनः ।
करिष्यामि न संदेहस्ताटकावधमुत्तमम् ॥४॥

4. so'haṃ piturvacaḥ śrutvā śāsanādbrahma vādinaḥ ,
kariṣyāmi na saṃdehastāṭakāvadhamuttamam.

4. saḥ aham pituḥ vacaḥ śrutvā śāsanāt brahmavādinaḥ
kariṣyāmi na sandehaḥ tāṭakāvadham uttamam

4. saḥ aham pituḥ vacaḥ श्रुत्वा [तथा] brahmavādinaḥ
śāsanāt uttamam tāṭakāvadham kariṣyāmi [अत्र] na sandehaḥ

4. Having heard my father's word, which stems from the command of the knower of the sacred texts (brahmavādin - referring to the sage), I will undoubtedly carry out the supreme slaying of Tataka. There is no doubt about this.

Words meanings summery:

• सः (saḥ) - I (connecting to 'aham') (that, he)

• अहम् (aham) - I

• पितुः (pituḥ) - of the father

• वचः (vacaḥ) - word, command

• श्रुत्वा (śrutvā) - having heard

• शासनात् (śāsanāt) - from the command, from the rule, by the instruction

• ब्रह्मवादिनः (brahmavādinaḥ) - referring to the sage Viśvāmitra (of the speaker of Brahman/Veda, of the theologian/sage)

• करिष्यामि (kariṣyāmi) - I shall do, I will perform

• न (na) - not

• सन्देहः (sandehaḥ) - doubt, uncertainty

• ताटकावधम् (tāṭakāvadham) - the slaying of Tataka

• उत्तमम् (uttamam) - excellent, supreme, best

Words meanings and morphology

सः (saḥ) - I (connecting to 'aham') (that, he)

(pronoun)

Nominative, masculine, singular of tad

tad - that, he, she, it (demonstrative pronoun)

अहम् (aham) - I

(pronoun)

Nominative, singular of aham

aham - I (first person singular pronoun)

पितुः (pituḥ) - of the father

(noun)

Genitive, masculine, singular of pitṛ

pitṛ - father

वचः (vacaḥ) - word, command

(noun)

Nominative, neuter, singular of vacas

vacas - word, speech, command

Root: vac (class 2)

श्रुत्वा (śrutvā) - having heard

(indeclinable)

absolutive (gerund)

Root: śru (class 5)

शासनात् (śāsanāt) - from the command, from the rule, by the instruction

(noun)

Ablative, neuter, singular of śāsana

śāsana - command, rule, instruction, teaching

Root: śās (class 2)

ब्रह्मवादिनः (brahmavādinaḥ) - referring to the sage Viśvāmitra (of the speaker of Brahman/Veda, of the theologian/sage)

(noun)

Genitive, masculine, singular of brahmavādin

brahmavādin - speaker of Brahman, expounder of the Veda, theologian, sage

Compound type : tatpuruṣa (brahma+vādin)

• brahma – Brahman, sacred word, Veda
  noun (neuter)
• vādin – speaking, speaker, proclaiming
  adjective (masculine)
  agent noun/adjective
  from root vad with agent suffix -in
  Root: vad (class 1)

करिष्यामि (kariṣyāmi) - I shall do, I will perform

(verb)

1st person , singular, active, future (lṛṭ) of kṛ

Root: kṛ (class 8)

न (na) - not

(indeclinable)

सन्देहः (sandehaḥ) - doubt, uncertainty

(noun)

Nominative, masculine, singular of sandeha

sandeha - doubt, uncertainty, suspicion

Prefix: sam

Root: dih (class 1)

ताटकावधम् (tāṭakāvadham) - the slaying of Tataka

(noun)

Accusative, masculine, singular of tāṭakāvadha

tāṭakāvadha - the slaying of Tataka (a demoness)

Compound type : tatpuruṣa (tāṭakā+vadha)

• tāṭakā – Tataka (name of a female demon)
  proper noun (feminine)
• vadha – slaying, killing, destruction
  noun (masculine)
  from root vadh
  Root: vadh (class 1)

उत्तमम् (uttamam) - excellent, supreme, best

(adjective)

Accusative, masculine, singular of uttama

uttama - excellent, supreme, best, highest

superlative degree of 'ud'

Note: Agrees with 'tāṭakāvadham'.