वाल्मीकि-रामायणम् vālmīki-rāmāyaṇam - book-7, chapter-31, verse-8

तमेव दिवसं सो ऽथ हैहयाधिपतिर्बली ।
अर्जुनो नर्मदां रन्तुं गतः स्त्रीभिः सहेश्वरः ॥८॥

8. tameva divasaṃ so'tha haihayādhipatirbalī ,
arjuno narmadāṃ rantuṃ gataḥ strībhiḥ saheśvaraḥ.

8. atha saḥ balī haihayādhipatiḥ arjunaḥ tam eva
divasam strībhiḥ saha īśvaraḥ narmadām rantuṃ gataḥ

8. Then, on that very day, that powerful lord of the Haihayas, Arjuna, went to the Narmada river to sport with his women.

Words meanings summery:

• तम् (tam) - that, him

• एव (eva) - indeed, only, very

• दिवसम् (divasam) - day

• सः (saḥ) - he, that (one)

• अथ (atha) - then, now, moreover

• हैहयाधिपतिः (haihayādhipatiḥ) - lord of the Haihayas, king of the Haihayas

• बली (balī) - powerful, strong

• अर्जुनः (arjunaḥ) - Kārtavīrya Arjuna, the king of the Haihayas (Arjuna (proper name, referring to Kārtavīrya Arjuna))

• नर्मदाम् (narmadām) - Narmada river

• रन्तुं (rantuṁ) - to sport, to play, to enjoy oneself

• गतः (gataḥ) - gone, went

• स्त्रीभिः (strībhiḥ) - with women, by women

• सह (saha) - with, together with

• ईश्वरः (īśvaraḥ) - Arjuna, the lord/king (lord, master, ruler)

Words meanings and morphology

तम् (tam) - that, him

(pronoun)

Accusative, masculine, singular of tad

tad - that, he, she, it

एव (eva) - indeed, only, very

(indeclinable)

दिवसम् (divasam) - day

(noun)

Accusative, masculine, singular of divasa

divasa - day

सः (saḥ) - he, that (one)

(pronoun)

Nominative, masculine, singular of tad

tad - that, he, she, it

अथ (atha) - then, now, moreover

(indeclinable)

हैहयाधिपतिः (haihayādhipatiḥ) - lord of the Haihayas, king of the Haihayas

(noun)

Nominative, masculine, singular of haihayādhipati

haihayādhipati - lord of the Haihayas

Compound type : tatpuruṣa (haihaya+adhipati)

• haihaya – name of an ancient royal lineage or people
  proper noun (masculine)
• adhipati – lord, ruler, master
  noun (masculine)

बली (balī) - powerful, strong

(adjective)

Nominative, masculine, singular of balin

balin - strong, powerful, mighty

अर्जुनः (arjunaḥ) - Kārtavīrya Arjuna, the king of the Haihayas (Arjuna (proper name, referring to Kārtavīrya Arjuna))

(proper noun)

Nominative, masculine, singular of arjuna

arjuna - Arjuna (name of a hero, often referring to Kārtavīrya Arjuna in this context)

नर्मदाम् (narmadām) - Narmada river

(proper noun)

Accusative, feminine, singular of narmadā

narmadā - the Narmada river (a sacred river in India)

रन्तुं (rantuṁ) - to sport, to play, to enjoy oneself

(verbal derivative)

गतः (gataḥ) - gone, went

(verbal derivative)

स्त्रीभिः (strībhiḥ) - with women, by women

(noun)

Instrumental, feminine, plural of strī

strī - woman, wife, female

सह (saha) - with, together with

(indeclinable)

ईश्वरः (īśvaraḥ) - Arjuna, the lord/king (lord, master, ruler)

(noun)

Nominative, masculine, singular of īśvara

īśvara - lord, master, ruler, controller