महाभारतः mahābhārataḥ - book-12, chapter-78, verse-17

त्रीन्वर्णाननुतिष्ठन्ति यथावदनसूयकाः ।
मम शूद्राः स्वकर्मस्था मामकान्तरमाविशः ॥१७॥

17. trīnvarṇānanutiṣṭhanti yathāvadanasūyakāḥ ,
mama śūdrāḥ svakarmasthā māmakāntaramāviśaḥ.

17. trīn varṇān anutiṣṭhanti yathāvat anasūyakāḥ
mama śūdrāḥ svakarmasthāḥ māmakāntaram āviśaḥ

17. anasūyakāḥ yathāvat trīn varṇān anutiṣṭhanti
mama svakarmasthāḥ śūdrāḥ māmakāntaram āviśaḥ

17. My Shudras (śūdrāḥ), who are steadfast in their own duties (svakarma), serve the three (other) classes properly and without envy, also enter into my inner being.

Words meanings summery:

• त्रीन् (trīn) - three

• वर्णान् (varṇān) - classes (social divisions) (classes, colors, castes)

• अनुतिष्ठन्ति (anutiṣṭhanti) - they serve (the other classes) (they serve, they follow, they perform)

• यथावत् (yathāvat) - properly, duly, as it should be

• अनसूयकाः (anasūyakāḥ) - not envious, without malice, ungrudging

• मम (mama) - my, of me

• शूद्राः (śūdrāḥ) - Shudras, members of the laboring class

• स्वकर्मस्थाः (svakarmasthāḥ) - established in their own duty/action

• मामकान्तरम् (māmakāntaram) - my inner being, my interior

• आविशः (āviśaḥ) - they enter, may they enter

Words meanings and morphology

त्रीन् (trīn) - three

(numeral)

वर्णान् (varṇān) - classes (social divisions) (classes, colors, castes)

(noun)

Accusative, masculine, plural of varṇa

varṇa - color, outward appearance, class, caste

Root: vṛ (class 5)

अनुतिष्ठन्ति (anutiṣṭhanti) - they serve (the other classes) (they serve, they follow, they perform)

(verb)

3rd person , plural, active, present (laṭ) of anutiṣṭh

Root `sthā` (to stand) with prefix `anu` (after, along, in conformity with).

Prefix: anu

Root: sthā (class 1)

यथावत् (yathāvat) - properly, duly, as it should be

(indeclinable)

From `yathā` (as) + suffix `vat`.

अनसूयकाः (anasūyakāḥ) - not envious, without malice, ungrudging

(adjective)

Nominative, masculine, plural of anasūyaka

anasūyaka - not envious, free from malice, ungrudging

From `a` (not) + `asūyaka` (envious), from `a-√sūy` (to be jealous).

Compound type : nañ-tatpuruṣa (a+asūyaka)

• a – not, non-
  indeclinable
  Negative prefix
• asūyaka – envious, fault-finding
  adjective (masculine)
  Agent noun from `asūy` (to be envious)
  From `a-√sūy`
  Prefix: a
  Root: sūy (class 10)

Note: Adjective describing `śūdrāḥ`.

मम (mama) - my, of me

(pronoun)

Genitive, singular of mad

mad - I, me

शूद्राः (śūdrāḥ) - Shudras, members of the laboring class

(noun)

Nominative, masculine, plural of śūdra

śūdra - a Shudra, a member of the laboring class

स्वकर्मस्थाः (svakarmasthāḥ) - established in their own duty/action

(adjective)

Nominative, masculine, plural of svakarmastha

svakarmastha - standing in one's own duty, performing one's own work

Compound of `sva` (own) + `karma` (duty/action) + `stha` (standing, situated).

Compound type : tatpuruṣa (sva+karma+stha)

• sva – own, one's own
  pronoun
• karma – action, deed, duty (karma)
  noun (neuter)
  From root `kṛ` (to do)
  Root: kṛ (class 8)
• stha – standing, situated, abiding in
  adjective (masculine)
  Derived from `sthā` (to stand)
  Root: sthā (class 1)

मामकान्तरम् (māmakāntaram) - my inner being, my interior

(noun)

Accusative, neuter, singular of māmakāntara

māmakāntara - my inner self, my interior, my abode

Karmadhāraya compound of `māmaka` (my) and `antara` (interior).

Compound type : karmadhāraya (māmaka+antara)

• māmaka – my, mine
  adjective (masculine)
  Derived from `mama` (my)
• antara – interior, inside, heart, difference
  noun (neuter)

आविशः (āviśaḥ) - they enter, may they enter

(verb)

3rd person , plural, active, present/injunctive (laṅ (injunctive sense)) of āviś

Root `viś` (to enter) with prefix `ā` (into).

Prefix: ā

Root: viś (class 6)

Note: The ending `-aḥ` can represent a 3rd plural present form in some contexts, or a 2nd singular imperative. Here, with `śūdrāḥ`, 3rd plural is required, possibly reflecting an injunctive or shortened form.