महाभारतः mahābhārataḥ - book-1, chapter-67, verse-21

इति तस्याः प्रतिश्रुत्य स नृपो जनमेजय ।
मनसा चिन्तयन्प्रायात्काश्यपं प्रति पार्थिवः ॥२१॥

21. iti tasyāḥ pratiśrutya sa nṛpo janamejaya ,
manasā cintayanprāyātkāśyapaṁ prati pārthivaḥ.

21. iti tasyāḥ pratiśrutya saḥ nṛpaḥ janamejaya
manasā cintayan prāyāt kāśyapam prati pārthivaḥ

21. O Janamejaya, having thus made a promise to her, that king, pondering in his mind, departed towards Kaśyapa.

Words meanings summery:

• इति (iti) - thus (thus, so)

• तस्याः (tasyāḥ) - to her (to her, of her)

• प्रतिश्रुत्य (pratiśrutya) - having made a promise (having promised, having heard in reply)

• सः (saḥ) - that (he, that one)

• नृपः (nṛpaḥ) - king (king, ruler)

• जनमेजय (janamejaya) - O Janamejaya (Janamejaya (proper noun))

• मनसा (manasā) - in his mind (by the mind, mentally)

• चिन्तयन् (cintayan) - pondering (thinking, reflecting)

• प्रायात् (prāyāt) - departed (he went, departed)

• काश्यपम् (kāśyapam) - Kaśyapa (Kaśyapa (proper noun))

• प्रति (prati) - towards (towards, against)

• पार्थिवः (pārthivaḥ) - the king (king, ruler of earth)

Words meanings and morphology

इति (iti) - thus (thus, so)

(indeclinable)

तस्याः (tasyāḥ) - to her (to her, of her)

(pronoun)

Genitive, feminine, singular of tad

tad - that, she, her, it

Note: Also possibly dative. 'To her' in this context.

प्रतिश्रुत्य (pratiśrutya) - having made a promise (having promised, having heard in reply)

(indeclinable)

absolutive/gerund

Absolutive (indeclinable participle) from root śru (to hear) with prefix prati

Prefix: prati

Root: śru (class 5)

सः (saḥ) - that (he, that one)

(pronoun)

Nominative, masculine, singular of tad

tad - that, he, she, it

नृपः (nṛpaḥ) - king (king, ruler)

(noun)

Nominative, masculine, singular of nṛpa

nṛpa - king, ruler, protector of men

Compound type : tatpuruṣa (nṛ+pa)

• nṛ – man, human
  noun (masculine)
• pa – protector, ruler
  noun (masculine)

जनमेजय (janamejaya) - O Janamejaya (Janamejaya (proper noun))

(proper noun)

Vocative, masculine, singular of janamejaya

janamejaya - name of a king, a descendant of the Pandavas and listener of the Mahabharata

मनसा (manasā) - in his mind (by the mind, mentally)

(noun)

Instrumental, neuter, singular of manas

manas - mind, intellect, thought

चिन्तयन् (cintayan) - pondering (thinking, reflecting)

(adjective)

Nominative, masculine, singular of cintayant

cintayant - thinking, reflecting, pondering

present active participle

Present active participle from root cit (to perceive, think) with causal suffix -i

Root: cit (class 10)

प्रायात् (prāyāt) - departed (he went, departed)

(verb)

3rd person , singular, active, past imperfect (laṅ) of pra-i

imperfect, third person singular

Imperfect tense, parasmaipada conjugation, 3rd person singular, from root i with prefix pra

Prefix: pra

Root: i (class 2)

काश्यपम् (kāśyapam) - Kaśyapa (Kaśyapa (proper noun))

(proper noun)

Accusative, masculine, singular of kāśyapa

kāśyapa - name of an ancient sage, son of Marici, one of the Saptarishis

प्रति (prati) - towards (towards, against)

(indeclinable)

पार्थिवः (pārthivaḥ) - the king (king, ruler of earth)

(noun)

Nominative, masculine, singular of pārthiva

pārthiva - earthly, a king, ruler (derived from pṛthivī 'earth')

Derived from pṛthivī (earth)