महाभारतः mahābhārataḥ - book-13, chapter-18, verse-16

वसिष्ठो नाम भगवांश्चाक्षुषस्य मनोः सुतः ।
शतक्रतोरचिन्त्यस्य सत्रे वर्षसहस्रिके ।
वर्तमानेऽब्रवीद्वाक्यं साम्नि ह्युच्चारिते मया ॥१६॥

16. vasiṣṭho nāma bhagavāṁścākṣuṣasya manoḥ sutaḥ ,
śatakratoracintyasya satre varṣasahasrike ,
vartamāne'bravīdvākyaṁ sāmni hyuccārite mayā.

16. vasiṣṭhaḥ nāma bhagavān ca cākṣuṣasya
manoḥ sutaḥ śatakratoḥ acintyasya
satre varṣasahastrike vartamāne
abravīt vākyam sāmni hi uccārite mayā

16. Indeed, while the Sāman chant I had uttered was being performed during the thousand-year long Vedic ritual (sattra) of the venerable, inconceivable Śatakratu (Indra), the revered Vasiṣṭha, son of Cākṣuṣa Manu, spoke these words.

Words meanings summery:

• वसिष्ठः (vasiṣṭhaḥ) - Vasiṣṭha

• नाम (nāma) - by name, indeed, namely

• भगवान् (bhagavān) - the revered (sage) (revered, divine, glorious, venerable)

• च (ca) - and, also, moreover

• चाक्षुषस्य (cākṣuṣasya) - of Cākṣuṣa Manu (of Cākṣuṣa)

• मनोः (manoḥ) - of Manu, from Manu

• सुतः (sutaḥ) - son

• शतक्रतोः (śatakratoḥ) - of Śatakratu (Indra) (of Śatakratu)

• अचिन्त्यस्य (acintyasya) - of the inconceivable, of the unthinkable

• सत्रे (satre) - in the Vedic ritual, in the sattra

• वर्षसहस्त्रिके (varṣasahastrike) - in the thousand-year long

• वर्तमाने (vartamāne) - while it (the sattra) was ongoing (while being current, in progress, while going on)

• अब्रवीत् (abravīt) - he spoke, he said

• वाक्यम् (vākyam) - statement, word, speech

• साम्नि (sāmni) - concerning the Sāman, in the Sāman (chant)

• हि (hi) - indeed, surely, for

• उच्चारिते (uccārite) - having been uttered, chanted

• मया (mayā) - by me

Words meanings and morphology

वसिष्ठः (vasiṣṭhaḥ) - Vasiṣṭha

(proper noun)

Nominative, masculine, singular of vasiṣṭha

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

नाम (nāma) - by name, indeed, namely

(indeclinable)

भगवान् (bhagavān) - the revered (sage) (revered, divine, glorious, venerable)

(adjective)

Nominative, masculine, singular of bhagavat

bhagavat - lord, venerable, divine, glorious, fortunate

च (ca) - and, also, moreover

(indeclinable)

चाक्षुषस्य (cākṣuṣasya) - of Cākṣuṣa Manu (of Cākṣuṣa)

(proper noun)

Genitive, masculine, singular of cākṣuṣa

cākṣuṣa - Cākṣuṣa (name of the sixth Manu); visible, ocular

मनोः (manoḥ) - of Manu, from Manu

(noun)

Genitive, masculine, singular of manu

manu - Manu (progenitor of mankind); man, human being, intelligence

Note: Can also be ablative singular

सुतः (sutaḥ) - son

(noun)

Nominative, masculine, singular of suta

suta - son, child; produced, born

past passive participle (from √sū)

Root: sū (class 2)

शतक्रतोः (śatakratoḥ) - of Śatakratu (Indra) (of Śatakratu)

(proper noun)

Genitive, masculine, singular of śatakratu

śatakratu - Śatakratu (an epithet of Indra, 'having a hundred powers' or 'performing a hundred Vedic rituals')

Compound type : bahuvrīhi (śata+kratu)

• śata – hundred
  numeral (neuter)
• kratu – power, might, sacrifice, ritual, understanding, intention
  noun (masculine)

अचिन्त्यस्य (acintyasya) - of the inconceivable, of the unthinkable

(adjective)

Genitive, masculine, singular of acintya

acintya - inconceivable, unthinkable, incomprehensible

gerundive/future passive participle (from √cint with a-negative)

Compound type : nañ-tatpuruṣa (a+cintya)

• a – not, un-
  indeclinable
• cintya – to be thought, conceivable
  adjective (masculine)
  gerundive/future passive participle
  Root: cint (class 10)

सत्रे (satre) - in the Vedic ritual, in the sattra

(noun)

Locative, neuter, singular of sattra

sattra - a long sacrificial session, Vedic ritual, an asylum, a forest, a house

वर्षसहस्त्रिके (varṣasahastrike) - in the thousand-year long

(adjective)

Locative, neuter, singular of varṣasahastrika

varṣasahastrika - lasting a thousand years, thousand-year long

Derived from varṣasahastra (thousand years) + ika (suffix)

Compound type : tatpuruṣa (varṣa+sahastra)

• varṣa – year, rain
  noun (neuter)
• sahastra – thousand
  numeral (neuter)

वर्तमाने (vartamāne) - while it (the sattra) was ongoing (while being current, in progress, while going on)

(adjective)

Locative, neuter, singular of vartamāna

vartamāna - being, existing, present, current, ongoing

present active participle

From root √vṛt (to be, to exist, to proceed)

Root: vṛt (class 1)

अब्रवीत् (abravīt) - he spoke, he said

(verb)

3rd person , singular, active, past imperfect (laṅ) of abravīt

imperfect 3rd singular active

Root: brū (class 2)

वाक्यम् (vākyam) - statement, word, speech

(noun)

Accusative, neuter, singular of vākya

vākya - sentence, speech, word, statement

साम्नि (sāmni) - concerning the Sāman, in the Sāman (chant)

(noun)

Locative, neuter, singular of sāman

sāman - a Sāman chant (from Sāmaveda); song, melody, conciliation

हि (hi) - indeed, surely, for

(indeclinable)

उच्चारिते (uccārite) - having been uttered, chanted

(adjective)

Locative, neuter, singular of uccārita

uccārita - uttered, pronounced, chanted, spoken aloud

past passive participle

From root √car with prefix ud

Prefix: ud

Root: car (class 1)

मया (mayā) - by me

(pronoun)

Instrumental, singular of asmad

asmad - I, we (first person pronoun)