वाल्मीकि-रामायणम् vālmīki-rāmāyaṇam - book-6, chapter-116, verse-54

ततः स प्रयतो वृद्धो वसिष्ठो ब्राह्मणैः सह ।
रामं रत्नमयो पीठे सहसीतं न्यवेशयत् ॥५४॥

54. tataḥ sa prayato vṛddho vasiṣṭho brāhmaṇaiḥ saha ,
rāmaṃ ratnamayo pīṭhe sahasītaṃ nyaveśayat.

54. tataḥ saḥ prayataḥ vṛddhaḥ vasiṣṭhaḥ brāhmaṇaiḥ
saha rāmam ratnamaye pīṭhe sahasītam nyaveśayat

54. tataḥ saḥ prayataḥ vṛddhaḥ vasiṣṭhaḥ brāhmaṇaiḥ
saha rāmam sahasītam ratnamaye pīṭhe nyaveśayat

54. Then, the venerable and aged Vasiṣṭha, accompanied by other brahmins (brāhmaṇa), seated Rama with Sītā on a jeweled throne.

Words meanings summery:

• ततः (tataḥ) - then, thereafter, from there

• सः (saḥ) - he, that

• प्रयत्ः (prayatḥ) - restrained, pure, venerable, attentive

• वृद्धः (vṛddhaḥ) - old, aged, venerable

• वसिष्ठः (vasiṣṭhaḥ) - Vasiṣṭha

• ब्राह्मणैः (brāhmaṇaiḥ) - by brahmins, with brahmins

• सह (saha) - with, along with, together with

• रामम् (rāmam) - Rama (accusative)

• रत्नमये (ratnamaye) - on a jeweled, on a gem-studded

• पीठे (pīṭhe) - on the seat, on the throne

• सहसीतम् (sahasītam) - accompanied by Sita, with Sita

• न्यवेशयत् (nyaveśayat) - he seated, he caused to sit

Words meanings and morphology

ततः (tataḥ) - then, thereafter, from there

(indeclinable)

सः (saḥ) - he, that

(pronoun)

Nominative, masculine, singular of tad

tad - that, he, she, it

प्रयत्ः (prayatḥ) - restrained, pure, venerable, attentive

(adjective)

Nominative, masculine, singular of prayatā

prayatā - restrained, pure, attentive, devout, venerable

Past Passive Participle

Prefix: pra

Root: yam (class 1)

वृद्धः (vṛddhaḥ) - old, aged, venerable

(adjective)

Nominative, masculine, singular of vṛddha

vṛddha - old, aged, grown, increased, venerable

Past Passive Particulation

Root: vṛdh (class 1)

वसिष्ठः (vasiṣṭhaḥ) - Vasiṣṭha

(proper noun)

Nominative, masculine, singular of vasiṣṭha

vasiṣṭha - Vasiṣṭha (name of a celebrated Vedic sage and guru of the Solar Dynasty)

ब्राह्मणैः (brāhmaṇaiḥ) - by brahmins, with brahmins

(noun)

Instrumental, masculine, plural of brāhmaṇa

brāhmaṇa - a brahmin, one belonging to the priestly class, relating to Brahman

सह (saha) - with, along with, together with

(indeclinable)

रामम् (rāmam) - Rama (accusative)

(proper noun)

Accusative, masculine, singular of rāma

rāma - Rama (a celebrated king of Ayodhya, son of Daśaratha)

रत्नमये (ratnamaye) - on a jeweled, on a gem-studded

(adjective)

Locative, neuter, singular of ratnamaya

ratnamaya - made of gems, jeweled, consisting of jewels

Compound type : tatpurusha (ratna+maya)

• ratna – gem, jewel, precious stone
  noun (neuter)
• maya – made of, consisting of, full of
  suffix (adjectival)

पीठे (pīṭhe) - on the seat, on the throne

(noun)

Locative, neuter, singular of pīṭha

pīṭha - seat, stool, throne, bench

सहसीतम् (sahasītam) - accompanied by Sita, with Sita

(adjective)

Accusative, masculine, singular of sahasītā

sahasītā - along with Sita

Compound type : bahuvrihi (saha+sītā)

• saha – with, along with
  indeclinable
• sītā – Sita (wife of Rama)
  proper noun (feminine)

Note: Here, it acts as an adjective agreeing with 'rāmam' (masculine accusative singular), indicating Rama 'who is with Sita'.

न्यवेशयत् (nyaveśayat) - he seated, he caused to sit

(verb)

3rd person , singular, active, past imperfect (laṅ) of niveśay

Causative verb from root viś

Prefix: ni

Root: viś (class 6)