महाभारतः mahābhārataḥ - book-13, chapter-131, verse-8

स्थितो ब्राह्मणधर्मेण ब्राह्मण्यमुपजीवति ।
क्षत्रियो वाथ वैश्यो वा ब्रह्मभूयाय गच्छति ॥८॥

8. sthito brāhmaṇadharmeṇa brāhmaṇyamupajīvati ,
kṣatriyo vātha vaiśyo vā brahmabhūyāya gacchati.

8. sthitaḥ brāhmaṇadharmeṇa brāhmaṇyam upajīvati
kṣatriyaḥ vā atha vaiśyaḥ vā brahmabhūyāya gacchati

8. kṣatriyaḥ vā atha vaiśyaḥ vā brāhmaṇadharmeṇa
sthitaḥ brāhmaṇyam upajīvati brahmabhūyāya gacchati

8. When a kṣatriya or vaiśya, adhering to the intrinsic nature (dharma) characteristic of a brahmin, lives by brahminhood, he progresses towards becoming a brahmin.

Words meanings summery:

• स्थितः (sthitaḥ) - established in, adhering to (standing, situated, established, firm)

• ब्राह्मणधर्मेण (brāhmaṇadharmeṇa) - by the intrinsic nature (dharma) characteristic of a brahmin (by the dharma of a brahmin, by the duty of a brahmin)

• ब्राह्मण्यम् (brāhmaṇyam) - brahminhood (brahminhood, the state of being a brahmin, the quality of a brahmin)

• उपजीवति (upajīvati) - lives by (practicing) (lives by, depends on, practices, subsists)

• क्षत्रियः (kṣatriyaḥ) - a kṣatriya (a member of the warrior/ruling class)

• वा (vā) - or (or, either)

• अथ (atha) - or (alternative) (then, now, moreover, and, or)

• वैश्यः (vaiśyaḥ) - a vaiśya (a member of the merchant/farmer class)

• वा (vā) - or (or, either)

• ब्रह्मभूयाय (brahmabhūyāya) - for attaining brahminhood (for becoming brahman, for attaining brahminhood)

• गच्छति (gacchati) - attains, proceeds (goes, moves, attains, proceeds)

Words meanings and morphology

स्थितः (sthitaḥ) - established in, adhering to (standing, situated, established, firm)

(adjective)

Nominative, masculine, singular of sthita

sthita - stood, standing, situated, established, firm, steady

Past Passive Participle

From root sthā + kta

Root: sthā (class 1)

Note: Agrees with the implied subject (kṣatriya or vaiśya).

ब्राह्मणधर्मेण (brāhmaṇadharmeṇa) - by the intrinsic nature (dharma) characteristic of a brahmin (by the dharma of a brahmin, by the duty of a brahmin)

(noun)

Instrumental, masculine, singular of brāhmaṇadharma

brāhmaṇadharma - duty of a brahmin, natural law of a brahmin, characteristic of a brahmin

Compound of brāhmaṇa and dharma

Compound type : tatpurusha (brāhmaṇa+dharma)

• brāhmaṇa – a brahmin, relating to a brahmin
  noun (masculine)
• dharma – law, duty, righteousness, virtue, intrinsic nature, constitution
  noun (masculine)
  From root dhṛ (to uphold)
  Root: dhṛ (class 1)

ब्राह्मण्यम् (brāhmaṇyam) - brahminhood (brahminhood, the state of being a brahmin, the quality of a brahmin)

(noun)

Accusative, neuter, singular of brāhmaṇya

brāhmaṇya - brahminhood, the state or dignity of a brahmin, the quality of a brahmin

Derived from brāhmaṇa + ṣya प्रत्यय

Note: Object of upajīvati.

उपजीवति (upajīvati) - lives by (practicing) (lives by, depends on, practices, subsists)

(verb)

3rd person , singular, active, present indicative (lat) of upajīv

Prefix: upa

Root: jīv (class 1)

क्षत्रियः (kṣatriyaḥ) - a kṣatriya (a member of the warrior/ruling class)

(noun)

Nominative, masculine, singular of kṣatriya

kṣatriya - a member of the warrior or ruling class, a kshatriya

Note: One of the subjects.

वा (vā) - or (or, either)

(indeclinable)

Note: Connects kṣatriyaḥ and vaiśyaḥ.

अथ (atha) - or (alternative) (then, now, moreover, and, or)

(indeclinable)

Note: Often used with vā for "either... or".

वैश्यः (vaiśyaḥ) - a vaiśya (a member of the merchant/farmer class)

(noun)

Nominative, masculine, singular of vaiśya

vaiśya - a member of the merchant or farmer class, a vaishya

Note: One of the subjects.

वा (vā) - or (or, either)

(indeclinable)

Note: Connects kṣatriyaḥ and vaiśyaḥ.

ब्रह्मभूयाय (brahmabhūyāya) - for attaining brahminhood (for becoming brahman, for attaining brahminhood)

(noun)

Dative, neuter, singular of brahmabhūya

brahmabhūya - the state of becoming brahman, brahminhood

Compound: brahman (brahmin/Brahman) + bhūya (becoming)

Compound type : tatpurusha (brahman+bhūya)

• brahman – Brahmin, sacred knowledge, Brahman (the Absolute)
  noun (neuter)
• bhūya – becoming, existence
  noun (neuter)
  From root bhū (to be, to become)
  Root: bhū (class 1)

Note: Indicates purpose.

गच्छति (gacchati) - attains, proceeds (goes, moves, attains, proceeds)

(verb)

3rd person , singular, active, present indicative (lat) of gam

Root: gam (class 1)

Note: Null subject implied (kṣatriya or vaiśya).