वाल्मीकि-रामायणम् vālmīki-rāmāyaṇam - book-1, chapter-22, verse-18

अर्घ्यं पाद्यं तथातिथ्यं निवेद्यकुशिकात्मजे ।
रामलक्ष्मणयोः पश्चादकुर्वन्नतिथिक्रियाम् ॥१८॥

18. arghyaṃ pādyaṃ tathātithyaṃ nivedyakuśikātmaje ,
rāmalakṣmaṇayoḥ paścādakurvannatithikriyām.

18. arghyam pādyam tathā ātithyam nivedya kuśikātmaje
rāmalakṣmaṇayoḥ paścāt akurvan atithikriyām

18. Having offered the respectful water (arghya), foot-water (pādya), and hospitality to the son of Kuśika (Viśvāmitra), they then performed the rites of hospitality for Rāma and Lakṣmaṇa.

Words meanings summery:

• अर्घ्यम् (arghyam) - water for respectful offering, respectful offering

• पाद्यम् (pādyam) - water for washing feet, foot-water

• तथा (tathā) - thus, so, and, in that manner

• आतिथ्यम् (ātithyam) - hospitality, guest-duty

• निवेद्य (nivedya) - having offered, having presented

• कुशिकात्मजे (kuśikātmaje) - to Viśvāmitra (to the son of Kuśika (Viśvāmitra))

• रामलक्ष्मणयोः (rāmalakṣmaṇayoḥ) - of Rāma and Lakṣmaṇa, to Rāma and Lakṣmaṇa

• पश्चात् (paścāt) - afterwards, behind, later

• अकुर्वन् (akurvan) - they performed, they did

• अतिथिक्रियाम् (atithikriyām) - guest rites, act of hospitality

Words meanings and morphology

अर्घ्यम् (arghyam) - water for respectful offering, respectful offering

(noun)

Accusative, neuter, singular of arghya

arghya - worthy of respect, respectful offering (often water), guest offering

पाद्यम् (pādyam) - water for washing feet, foot-water

(noun)

Accusative, neuter, singular of pādya

pādya - water for washing feet, foot-water

तथा (tathā) - thus, so, and, in that manner

(indeclinable)

आतिथ्यम् (ātithyam) - hospitality, guest-duty

(noun)

Accusative, neuter, singular of ātithya

ātithya - hospitality, guest-duty, entertainment

निवेद्य (nivedya) - having offered, having presented

(indeclinable)

Absolutive (Gerund)

Formed from root `vid` (to know, to find) with prefix `ni` (down, in) and causal suffix -`ay`-. Used for `nivedayati` which means 'to offer'.

Prefix: ni

Root: vid (class 6)

कुशिकात्मजे (kuśikātmaje) - to Viśvāmitra (to the son of Kuśika (Viśvāmitra))

(proper noun)

Dative, masculine, singular of kuśikātmaja

kuśikātmaja - son of Kuśika

Compound type : tatpuruṣa (kuśika+ātmaja)

• kuśika – name of a king, father of Viśvāmitra
  proper noun (masculine)
• ātmaja – son, born from oneself
  noun (masculine)

रामलक्ष्मणयोः (rāmalakṣmaṇayoḥ) - of Rāma and Lakṣmaṇa, to Rāma and Lakṣmaṇa

(proper noun)

Locative, masculine, dual of rāmalakṣmaṇa

rāmalakṣmaṇa - Rāma and Lakṣmaṇa

Compound type : dvandva (rāma+lakṣmaṇa)

• rāma – name of a prominent deity in Hinduism, hero of the Rāmāyaṇa
  proper noun (masculine)
• lakṣmaṇa – name of Rāma's younger brother
  proper noun (masculine)

पश्चात् (paścāt) - afterwards, behind, later

(indeclinable)

अकुर्वन् (akurvan) - they performed, they did

(verb)

3rd person , plural, active, past imperfect (laṅ) of kṛ

Imperfect

Imperfect 3rd person plural, derived from root `kṛ`.

Root: kṛ (class 8)

अतिथिक्रियाम् (atithikriyām) - guest rites, act of hospitality

(noun)

Accusative, feminine, singular of atithikriyā

atithikriyā - guest rites, act of hospitality, duty towards guests

Compound type : tatpuruṣa (atithi+kriyā)

• atithi – guest, stranger
  noun (masculine)
• kriyā – action, rite, ceremony, performance
  noun (feminine)