योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-36, verse-56

राजन्याश्च तथा ज्ञेया अर्जुनातनयस्तथा ।
त्रिगर्त एकपात्क्षुद्रामबलास्वस्तवासिनः ॥ ५६ ॥

rājanyāśca tathā jñeyā arjunātanayastathā ,
trigarta ekapātkṣudrāmabalāsvastavāsinaḥ 56

56. rājanyāḥ ca tathā jñeyāḥ arjunātanayaḥ tathā
trigartaḥ ekapāt kṣudrāmabalāsvastavāsinaḥ

56. rājanyāḥ ca tathā jñeyāḥ,
arjunātanayaḥ tathā [ca jñeyāḥ] trigartaḥ ekapāt [ca jñeyāḥ],
kṣudrāmabalāsvastavāsinaḥ [ca jñeyāḥ]

56. Similarly, the Rājanyas should be known, as should the Arjunātanayas. Also, the Trigartas, the Ekapatas, and the Kṣudrāmbalāsvastavāsins.

Words meanings summery:

• राजन्याः (rājanyāḥ) - Kshatriyas, nobility, a kingly people/tribe

• च (ca) - and, also

• तथा (tathā) - similarly, also, thus

• ज्ञेयाः (jñeyāḥ) - should be known, knowable, to be recognized

• अर्जुनातनयः (arjunātanayaḥ) - Arjunātanaya (a tribe/people)

• तथा (tathā) - similarly, also, thus

• त्रिगर्तः (trigartaḥ) - Trigarta (a country/people)

• एकपात् (ekapāt) - Ekapat (a people or country, literally 'one-footed')

• क्षुद्रामबलास्वस्तवासिनः (kṣudrāmabalāsvastavāsinaḥ) - The Kṣudrāmbalāsvastavāsins (a collective name for several tribes or a composite tribe)

Words meanings and morphology

राजन्याः (rājanyāḥ) - Kshatriyas, nobility, a kingly people/tribe

(proper noun)

Nominative, masculine, plural of rājanya

rājanya - of kingly race, noble, a Kshatriya; name of a people/tribe

Root: rāj (class 1)

च (ca) - and, also

(indeclinable)

तथा (tathā) - similarly, also, thus

(indeclinable)

ज्ञेयाः (jñeyāḥ) - should be known, knowable, to be recognized

(adjective)

Nominative, masculine, plural of jñeya

jñeya - to be known, knowable, recognizable

Gerundive

Derived from root jñā (to know) with suffix -ya

Root: jñā (class 9)

Note: Applies to the preceding and following tribes/peoples.

अर्जुनातनयः (arjunātanayaḥ) - Arjunātanaya (a tribe/people)

(proper noun)

Nominative, masculine, singular of arjunātanaya

arjunātanaya - Arjunātanaya (name of a tribe, possibly descendants of Arjuna or associated with him)

तथा (tathā) - similarly, also, thus

(indeclinable)

त्रिगर्तः (trigartaḥ) - Trigarta (a country/people)

(proper noun)

Nominative, masculine, singular of trigarta

trigarta - Trigarta (name of an ancient country and its people, associated with three valleys or rivers)

एकपात् (ekapāt) - Ekapat (a people or country, literally 'one-footed')

(proper noun)

Nominative, masculine, singular of ekapād

ekapād - Ekapat (name of a people/country, or mythical one-footed beings)

Compound type : bahuvrīhi (eka+pād)

• eka – one, single
  numeral
• pād – foot
  noun (masculine)

Note: Though singular, refers to a people.

क्षुद्रामबलास्वस्तवासिनः (kṣudrāmabalāsvastavāsinaḥ) - The Kṣudrāmbalāsvastavāsins (a collective name for several tribes or a composite tribe)

(proper noun)

Nominative, masculine, plural of kṣudrāmabalāsvastavāsin

kṣudrāmabalāsvastavāsin - The Kṣudrāmbalāsvastavāsins (a compound name for people, likely referring to Kṣudras, Ambalas, and dwellers of Svasta or Swastikas)

Compound type : dvandva (kṣudra+ambalā+svastavāsin)

• kṣudra – Kṣudra (name of a people/tribe)
  proper noun (masculine)
• ambalā – Ambalā (name of a people/tribe, possibly a variant of Ambaṣṭha)
  proper noun (feminine)
• svastavāsin – Svastavāsin (dweller of Svasta, or name of a people like Swastikas)
  proper noun (masculine)
  Root: vas (class 1)

Note: Collective name in plural nominative.