महाभारतः mahābhārataḥ - book-3, chapter-148, verse-19

एकवेदसमायुक्ता एकमन्त्रविधिक्रियाः ।
पृथग्धर्मास्त्वेकवेदा धर्ममेकमनुव्रताः ॥१९॥

19. ekavedasamāyuktā ekamantravidhikriyāḥ ,
pṛthagdharmāstvekavedā dharmamekamanuvratāḥ.

19. ekavedasamāyuktāḥ ekamantravidhikriyāḥ
pṛthagdharmāḥ tu ekavedāḥ dharmam ekam anuvratāḥ

19. They were connected with a single Veda, and their rituals were performed according to the injunctions of a single mantra. Although they possessed distinct natural laws (dharma) (appropriate to each social class), they nevertheless adhered to one supreme natural law (dharma) and were followers of a single Veda.

Words meanings summery:

• एकवेदसमायुक्ताः (ekavedasamāyuktāḥ) - connected with a single Veda (connected with one Veda, endowed with a single Veda)

• एकमन्त्रविधिक्रियाः (ekamantravidhikriyāḥ) - their rituals performed according to the injunctions of a single mantra (whose ritual actions are based on a single mantra)

• पृथग्धर्माः (pṛthagdharmāḥ) - having distinct natural laws (dharma) (for each social class) (having distinct natural laws (dharma), whose duties (dharma) are separate)

• तु (tu) - but, nevertheless (but, indeed, yet, on the other hand)

• एकवेदाः (ekavedāḥ) - unified by a single Veda (having a single Veda, whose Veda is one)

• धर्मम् (dharmam) - one (supreme) natural law (dharma) (natural law (dharma), duty, righteousness)

• एकम् (ekam) - one (modifies dharma) (one, single, unique)

• अनुव्रताः (anuvratāḥ) - adherents of, following (the one dharma) (adhering to, following, devoted to a vow)

Words meanings and morphology

एकवेदसमायुक्ताः (ekavedasamāyuktāḥ) - connected with a single Veda (connected with one Veda, endowed with a single Veda)

(adjective)

Nominative, masculine, plural of ekavedasamāyukta

ekavedasamāyukta - connected with one Veda, endowed with a single Veda

Past Passive Participle

from root yuj with prefixes sam-ā

Compound type : bahuvrīhi (eka+veda+samāyukta)

• eka – one, single, unique
  numeral (masculine)
• veda – Veda, sacred knowledge, scripture
  noun (masculine)
  Root: vid (class 2)
• samāyukta – connected, endowed, joined, combined
  adjective (masculine)
  Past Passive Participle
  from root yuj with prefixes sam-ā
  Prefixes: sam+ā
  Root: yuj (class 7)

एकमन्त्रविधिक्रियाः (ekamantravidhikriyāḥ) - their rituals performed according to the injunctions of a single mantra (whose ritual actions are based on a single mantra)

(adjective)

Nominative, masculine, plural of ekamantravidhikriyā

ekamantravidhikriyā - whose ritual actions are based on a single mantra

Compound type : bahuvrīhi (eka+mantra+vidhi+kriyā)

• eka – one, single, unique
  numeral (masculine)
• mantra – sacred utterance, hymn, prayer, formula (mantra)
  noun (masculine)
  Root: man (class 4)
• vidhi – rule, injunction, method, ritual
  noun (masculine)
  Prefix: vi
  Root: dhā (class 3)
• kriyā – action, ritual, performance, activity
  noun (feminine)
  Root: kṛ (class 8)

पृथग्धर्माः (pṛthagdharmāḥ) - having distinct natural laws (dharma) (for each social class) (having distinct natural laws (dharma), whose duties (dharma) are separate)

(adjective)

Nominative, masculine, plural of pṛthagdharma

pṛthagdharma - having distinct natural laws (dharma), whose duties (dharma) are separate

Compound type : bahuvrīhi (pṛthak+dharma)

• pṛthak – separately, distinctly, individually
  indeclinable
• dharma – natural law (dharma), duty, righteousness, constitution
  noun (masculine)
  Root: dhṛ (class 1)

तु (tu) - but, nevertheless (but, indeed, yet, on the other hand)

(indeclinable)

एकवेदाः (ekavedāḥ) - unified by a single Veda (having a single Veda, whose Veda is one)

(adjective)

Nominative, masculine, plural of ekaveda

ekaveda - having a single Veda, whose Veda is one

Compound type : bahuvrīhi (eka+veda)

• eka – one, single, unique
  numeral (masculine)
• veda – Veda, sacred knowledge, scripture
  noun (masculine)
  Root: vid (class 2)

धर्मम् (dharmam) - one (supreme) natural law (dharma) (natural law (dharma), duty, righteousness)

(noun)

Accusative, masculine, singular of dharma

dharma - natural law (dharma), constitution, duty, righteousness, virtue, custom, religion

from root dhṛ (to hold, support)

Root: dhṛ (class 1)

एकम् (ekam) - one (modifies dharma) (one, single, unique)

(numeral)

Note: modifies dharmam

अनुव्रताः (anuvratāḥ) - adherents of, following (the one dharma) (adhering to, following, devoted to a vow)

(adjective)

Nominative, masculine, plural of anuvrata

anuvrata - adhering to, following, devoted to a vow, loyal

from anu-vṛ

Compound type : prādi-samāsa (anu+vrata)

• anu – after, along, in accordance with
  indeclinable
• vrata – vow, sacred duty, religious observance, practice
  noun (neuter)
  Root: vṛ (class 1)