महाभारतः mahābhārataḥ - book-3, chapter-130, verse-4

द्वारं निषादराष्ट्रस्य येषां द्वेषात्सरस्वती ।
प्रविष्टा पृथिवीं वीर मा निषादा हि मां विदुः ॥४॥

4. dvāraṁ niṣādarāṣṭrasya yeṣāṁ dveṣātsarasvatī ,
praviṣṭā pṛthivīṁ vīra mā niṣādā hi māṁ viduḥ.

4. dvāram niṣādarāṣṭrasya yeṣām dveṣāt sarasvatī
praviṣṭā pṛthivīm vīra mā niṣādāḥ hi mām viduḥ

4. This is the entrance to the kingdom of the Niṣādas, due to whose hatred, O hero, the Sarasvatī river entered the earth (thinking), 'Let the Niṣādas not know me.'

Words meanings summery:

• द्वारम् (dvāram) - entrance, gate (door, gate, entrance)

• निषादराष्ट्रस्य (niṣādarāṣṭrasya) - of the Niṣāda kingdom (of the kingdom of Niṣādas)

• येषाम् (yeṣām) - due to whose (the Niṣādas') (of whom, whose (masc./neuter plural))

• द्वेषात् (dveṣāt) - due to hatred (from hatred, due to hatred)

• सरस्वती (sarasvatī) - the Sarasvatī river (Sarasvati (river/goddess))

• प्रविष्टा (praviṣṭā) - entered (entered, gone into)

• पृथिवीम् (pṛthivīm) - the earth (earth, ground)

• वीर (vīra) - O hero (vocative, addressing Yudhishthira) (O hero, brave one)

• मा (mā) - do not (not, do not)

• निषादाः (niṣādāḥ) - the Niṣādas (Niṣādas (plural))

• हि (hi) - (emphatic) (indeed, surely)

• माम् (mām) - me (Sarasvati refers to herself) (me, myself)

• विदुः (viduḥ) - may they know (may they know, they know)

Words meanings and morphology

द्वारम् (dvāram) - entrance, gate (door, gate, entrance)

(noun)

Nominative, neuter, singular of dvāra

dvāra - door, gate, entrance

निषादराष्ट्रस्य (niṣādarāṣṭrasya) - of the Niṣāda kingdom (of the kingdom of Niṣādas)

(noun)

Genitive, neuter, singular of niṣādarāṣṭra

niṣādarāṣṭra - kingdom of the Niṣādas

Compound: Niṣāda (name of a tribal people) + rāṣṭra (kingdom).

Compound type : ṣaṣṭhī-tatpuruṣa (niṣāda+rāṣṭra)

• niṣāda – Niṣāda (name of a tribal people/caste)
  proper noun (masculine)
• rāṣṭra – kingdom, realm, country
  noun (neuter)

येषाम् (yeṣām) - due to whose (the Niṣādas') (of whom, whose (masc./neuter plural))

(pronoun)

Genitive, masculine, plural of yad

yad - which, who, what

Note: Refers to Niṣādas.

द्वेषात् (dveṣāt) - due to hatred (from hatred, due to hatred)

(noun)

Ablative, masculine, singular of dveṣa

dveṣa - hatred, dislike

Note: Used to indicate cause.

सरस्वती (sarasvatī) - the Sarasvatī river (Sarasvati (river/goddess))

(proper noun)

Nominative, feminine, singular of sarasvatī

sarasvatī - Sarasvati (name of a river or a goddess)

Note: Subject of praviṣṭā.

प्रविष्टा (praviṣṭā) - entered (entered, gone into)

(adjective)

Nominative, feminine, singular of viś

viś - to enter

Past Passive Participle

Past Passive Participle of √viś with prefix pra. Feminine, singular, nominative, agreeing with Sarasvatī.

Prefix: pra

Root: viś (class 6)

Note: Here used in an active sense for a verb of motion.

पृथिवीम् (pṛthivīm) - the earth (earth, ground)

(noun)

Accusative, feminine, singular of pṛthivī

pṛthivī - earth, ground, world

Note: Object of 'entered'.

वीर (vīra) - O hero (vocative, addressing Yudhishthira) (O hero, brave one)

(noun)

Vocative, masculine, singular of vīra

vīra - hero, brave man, warrior

मा (mā) - do not (not, do not)

(indeclinable)

Note: Used with viduḥ (injunctive).

निषादाः (niṣādāḥ) - the Niṣādas (Niṣādas (plural))

(proper noun)

Nominative, masculine, plural of niṣāda

niṣāda - Niṣāda (name of a tribal people/caste)

Note: Subject of 'viduḥ'.

हि (hi) - (emphatic) (indeed, surely)

(indeclinable)

Note: Emphatic particle.

माम् (mām) - me (Sarasvati refers to herself) (me, myself)

(pronoun)

Accusative, singular of aham

aham - I, me

1st person singular pronoun.

Note: Object of 'viduḥ'.

विदुः (viduḥ) - may they know (may they know, they know)

(verb)

3rd person , plural, active, injunctive / perfect (luṅ (meaning) / liṭ (form)) of vid

Injunctive or Perfect tense, 3rd person plural, active voice of √vid. Here used in injunctive sense with mā.

Root: vid (class 2)