महाभारतः mahābhārataḥ - book-3, chapter-82, verse-43

ऋषिकुल्यां समासाद्य वासिष्ठं चैव भारत ।
वासिष्ठं समतिक्रम्य सर्वे वर्णा द्विजातयः ॥४३॥

43. ṛṣikulyāṁ samāsādya vāsiṣṭhaṁ caiva bhārata ,
vāsiṣṭhaṁ samatikramya sarve varṇā dvijātayaḥ.

43. ṛṣikulyām samāsādya vāsiṣṭham ca eva bhārata
vāsiṣṭham samatikramya sarve varṇāḥ dvijātayaḥ

43. O descendant of Bharata (bhārata), having reached the river of the sages (ṛṣikulyā) and also Vasiṣṭha's sacred place, and having then passed beyond Vasiṣṭha's, all social classes (varṇas) become twice-born (dvijātayas).

Words meanings summery:

• ऋषिकुल्याम् (ṛṣikulyām) - river of the sages (stream of sages, river of ascetics)

• समासाद्य (samāsādya) - having reached (having reached, having approached, having obtained)

• वासिष्ठम् (vāsiṣṭham) - Vasiṣṭha's sacred place (Vasiṣṭha's (place/hermitage), related to Vasiṣṭha)

• च (ca) - and (and, also, moreover)

• एव (eva) - also (indeed, certainly, just, only)

• भारत (bhārata) - O descendant of Bharata

• वासिष्ठम् (vāsiṣṭham) - Vasiṣṭha's sacred place (Vasiṣṭha's (place/hermitage), related to Vasiṣṭha)

• समतिक्रम्य (samatikramya) - having passed beyond (having passed beyond, having transgressed, having crossed)

• सर्वे (sarve) - all (all, every)

• वर्णाः (varṇāḥ) - social classes (varṇas) (colors, classes, castes)

• द्विजातयः (dvijātayaḥ) - twice-born (dvijātayas) (twice-born, members of the three upper castes)

Words meanings and morphology

ऋषिकुल्याम् (ṛṣikulyām) - river of the sages (stream of sages, river of ascetics)

(noun)

Accusative, feminine, singular of ṛṣikulyā

ṛṣikulyā - stream of sages, river of ascetics

Compound type : tatpurusha (ṛṣi+kulyā)

• ṛṣi – sage, seer, ascetic
  noun (masculine)
• kulyā – canal, channel, small river, stream
  noun (feminine)

समासाद्य (samāsādya) - having reached (having reached, having approached, having obtained)

(indeclinable)

absolutive (gerund)

from sam-ā-sad (गति)

Prefixes: sam+ā

Root: sad (class 1)

वासिष्ठम् (vāsiṣṭham) - Vasiṣṭha's sacred place (Vasiṣṭha's (place/hermitage), related to Vasiṣṭha)

(adjective)

Accusative, masculine, singular of vāsiṣṭha

vāsiṣṭha - descendant of Vasiṣṭha, relating to Vasiṣṭha, Vasiṣṭha's place

derived from Vasiṣṭha

Note: Used here substantively to refer to Vasiṣṭha's sacred place or hermitage.

च (ca) - and (and, also, moreover)

(indeclinable)

एव (eva) - also (indeed, certainly, just, only)

(indeclinable)

भारत (bhārata) - O descendant of Bharata

(proper noun)

Vocative, masculine, singular of bhārata

bhārata - descendant of Bharata, relating to Bharata, an Indian

vocative singular of bhārata

वासिष्ठम् (vāsiṣṭham) - Vasiṣṭha's sacred place (Vasiṣṭha's (place/hermitage), related to Vasiṣṭha)

(adjective)

Accusative, masculine, singular of vāsiṣṭha

vāsiṣṭha - descendant of Vasiṣṭha, relating to Vasiṣṭha, Vasiṣṭha's place

derived from Vasiṣṭha

Note: Used here substantively to refer to Vasiṣṭha's sacred place or hermitage.

समतिक्रम्य (samatikramya) - having passed beyond (having passed beyond, having transgressed, having crossed)

(indeclinable)

absolutive (gerund)

from sam-ati-kram (क्रमण)

Prefixes: sam+ati

Root: kram (class 1)

सर्वे (sarve) - all (all, every)

(pronoun)

Nominative, masculine, plural of sarva

sarva - all, every, whole

वर्णाः (varṇāḥ) - social classes (varṇas) (colors, classes, castes)

(noun)

Nominative, masculine, plural of varṇa

varṇa - color, class, caste, sound, letter

द्विजातयः (dvijātayaḥ) - twice-born (dvijātayas) (twice-born, members of the three upper castes)

(noun)

Nominative, masculine, plural of dvijāti

dvijāti - twice-born (a Brahmin, Kṣatriya, or Vaiśya)

Compound type : bahuvrihi (dvi+jāti)

• dvi – two, twice
  numeral
• jāti – birth, origin, species, class
  noun (feminine)
  Root: jan (class 4)