महाभारतः mahābhārataḥ - book-1, chapter-168, verse-22

ऋतावथ महर्षिः स संबभूव तया सह ।
देव्या दिव्येन विधिना वसिष्ठः श्रेष्ठभागृषिः ॥२२॥

22. ṛtāvatha maharṣiḥ sa saṁbabhūva tayā saha ,
devyā divyena vidhinā vasiṣṭhaḥ śreṣṭhabhāgṛṣiḥ.

22. ṛtau atha maharṣiḥ saḥ sambabhūva tayā saha
devyā divyena vidhinā vasiṣṭhaḥ śreṣṭhabhāk ṛṣiḥ

22. Then, at that auspicious time, that great sage Vasiṣṭha, who was the foremost among sages, united with her, the divine goddess, according to divine rites.

Words meanings summery:

• ऋतौ (ṛtau) - at that auspicious time (for conception) (at the proper time, in the season, during the period of menstruation)

• अथ (atha) - then, thereupon, now, moreover

• महर्षिः (maharṣiḥ) - great sage

• सः (saḥ) - that (referring to Vasiṣṭha) (he, that (masculine singular nominative pronoun))

• सम्बभूव (sambabhūva) - united with (in the sense of procreation) (was born, became, happened, existed, united with)

• तया (tayā) - with her, by her

• सह (saha) - with, together with

• देव्या (devyā) - by the goddess, with the goddess

• दिव्येन (divyena) - by divine, with divine, divine

• विधिना (vidhinā) - according to rites (by rule, by rite, by method, by fate)

• वसिष्ठः (vasiṣṭhaḥ) - Vasiṣṭha (a proper noun)

• श्रेष्ठभाक् (śreṣṭhabhāk) - foremost (among sages) (having the best share, foremost, preeminent)

• ऋषिः (ṛṣiḥ) - sage, seer

Words meanings and morphology

ऋतौ (ṛtau) - at that auspicious time (for conception) (at the proper time, in the season, during the period of menstruation)

(noun)

Locative, masculine, singular of ṛtu

ṛtu - season, proper time, auspicious time (especially for conception), menstruation

अथ (atha) - then, thereupon, now, moreover

(indeclinable)

महर्षिः (maharṣiḥ) - great sage

(noun)

Nominative, masculine, singular of maharṣi

maharṣi - great sage, eminent seer

Compound type : karmadhāraya (mahat+ṛṣi)

• mahat – great, large, important
  adjective (neuter)
• ṛṣi – sage, seer, inspired poet
  noun (masculine)

सः (saḥ) - that (referring to Vasiṣṭha) (he, that (masculine singular nominative pronoun))

(pronoun)

Nominative, masculine, singular of tad

tad - that, he, she, it

सम्बभूव (sambabhūva) - united with (in the sense of procreation) (was born, became, happened, existed, united with)

(verb)

3rd person , singular, active, perfect (lit) of sambhū

Root: bhū (to be, to become) with prefix: sam-

Prefix: sam

Root: bhū (class 1)

तया (tayā) - with her, by her

(pronoun)

Instrumental, feminine, singular of tad

tad - that, he, she, it

सह (saha) - with, together with

(indeclinable)

Note: Used with instrumental case.

देव्या (devyā) - by the goddess, with the goddess

(noun)

Instrumental, feminine, singular of devī

devī - goddess, queen

दिव्येन (divyena) - by divine, with divine, divine

(adjective)

Instrumental, masculine, singular of divya

divya - divine, heavenly, celestial, supernatural

Note: Agrees with 'vidhinā'.

विधिना (vidhinā) - according to rites (by rule, by rite, by method, by fate)

(noun)

Instrumental, masculine, singular of vidhi

vidhi - rule, rite, method, injunction, fate, destiny

Root: dhā (class 3)

वसिष्ठः (vasiṣṭhaḥ) - Vasiṣṭha (a proper noun)

(proper noun)

Nominative, masculine, singular of vasiṣṭha

vasiṣṭha - most excellent, best, Vasiṣṭha (name of a Vedic sage)

श्रेष्ठभाक् (śreṣṭhabhāk) - foremost (among sages) (having the best share, foremost, preeminent)

(adjective)

Nominative, masculine, singular of śreṣṭhabhāj

śreṣṭhabhāj - having the best share, chief, preeminent, excellent

Compound type : bahuvrīhi (śreṣṭha+bhāj)

• śreṣṭha – best, most excellent, chief
  adjective (masculine)
  Superlative of praśasya (excellent)
• bhāj – sharing, partaking, possessing, belonging to
  adjective (masculine)
  Derived from root bhaj- (to share, to possess)
  Root: bhaj (class 1)

Note: Refers to Vasiṣṭha.

ऋषिः (ṛṣiḥ) - sage, seer

(noun)

Nominative, masculine, singular of ṛṣi

ṛṣi - sage, seer, inspired poet