महाभारतः mahābhārataḥ - book-18, chapter-5, verse-21

षोडशस्त्रीसहस्राणि वासुदेवपरिग्रहः ।
न्यमज्जन्त सरस्वत्यां कालेन जनमेजय ।
ताश्चाप्यप्सरसो भूत्वा वासुदेवमुपागमन् ॥२१॥

21. ṣoḍaśastrīsahasrāṇi vāsudevaparigrahaḥ ,
nyamajjanta sarasvatyāṁ kālena janamejaya ,
tāścāpyapsaraso bhūtvā vāsudevamupāgaman.

21. ṣoḍaśastrīsahasrāṇi vāsudevaparigrahaḥ
nyamajjanta sarasvatyām
kālena janamejaya tāḥ ca api
apsarasaḥ bhūtvā vāsudevam upāgaman

21. janamejaya kālena vāsudevaparigrahaḥ
ṣoḍaśastrīsahasrāṇi
sarasvatyām nyamajjanta tāḥ ca api
apsarasaḥ bhūtvā vāsudevam upāgaman

21. O Janamejaya, in time, the sixteen thousand consorts of Vasudeva (Kṛṣṇa) immersed themselves in the Sarasvati river. They then became celestial nymphs (apsaras) and approached Vasudeva.

Words meanings summery:

• षोडशस्त्रीसहस्राणि (ṣoḍaśastrīsahasrāṇi) - sixteen thousand women/wives

• वासुदेवपरिग्रहः (vāsudevaparigrahaḥ) - consorts of Vasudeva (Kṛṣṇa)

• न्यमज्जन्त (nyamajjanta) - they immersed themselves

• सरस्वत्याम् (sarasvatyām) - in the Sarasvati river

• कालेन (kālena) - in due course, with time

• जनमेजय (janamejaya) - O Janamejaya

• ताः (tāḥ) - they (feminine)

• च (ca) - and

• अपि (api) - also, even

• अप्सरसः (apsarasaḥ) - celestial nymphs

• भूत्वा (bhūtvā) - having become

• वासुदेवम् (vāsudevam) - to Vasudeva (Kṛṣṇa)

• उपागमन् (upāgaman) - they approached

Words meanings and morphology

षोडशस्त्रीसहस्राणि (ṣoḍaśastrīsahasrāṇi) - sixteen thousand women/wives

(noun)

Nominative, neuter, plural of ṣoḍaśastrīsahasra

ṣoḍaśastrīsahasra - sixteen thousand women

Compound type : dvigu/tatpuruṣa (ṣoḍaśa+strī+sahasra)

• ṣoḍaśa – sixteen
  numeral adjective
• strī – woman, wife
  noun (feminine)
• sahasra – thousand
  noun (neuter)

वासुदेवपरिग्रहः (vāsudevaparigrahaḥ) - consorts of Vasudeva (Kṛṣṇa)

(noun)

Nominative, masculine, singular of vāsudevaparigraha

vāsudevaparigraha - wives/consorts of Vasudeva; property/possession of Vasudeva

Compound type : tatpuruṣa (vāsudeva+parigraha)

• vāsudeva – son of Vasudeva, Kṛṣṇa
  proper noun (masculine)
• parigraha – acquiring, seizing, receiving; wife, consort; property, possession
  noun (masculine)
  From root grah with prefix pari
  Prefix: pari
  Root: grah (class 9)

न्यमज्जन्त (nyamajjanta) - they immersed themselves

(verb)

3rd person , plural, active, imperfect past (laṅ) of majj

Imperfect ātmanepada, 3rd person plural

Prefix: ni

Root: majj (class 6)

Note: The ātmanepada ending for a transitive verb often implies a reflexive or middle sense.

सरस्वत्याम् (sarasvatyām) - in the Sarasvati river

(proper noun)

Locative, feminine, singular of sarasvatī

sarasvatī - Sarasvati (a sacred river, goddess of knowledge)

कालेन (kālena) - in due course, with time

(noun)

Instrumental, masculine, singular of kāla

kāla - time, period, appropriate time

जनमेजय (janamejaya) - O Janamejaya

(proper noun)

Vocative, masculine, singular of janamejaya

janamejaya - Janamejaya (name of a king, son of Parikṣit)

ताः (tāḥ) - they (feminine)

(pronoun)

Nominative, feminine, plural of tad

tad - that, those

च (ca) - and

(indeclinable)

अपि (api) - also, even

(indeclinable)

अप्सरसः (apsarasaḥ) - celestial nymphs

(noun)

Nominative, feminine, plural of apsaras

apsaras - celestial nymph, Apsaras

भूत्वा (bhūtvā) - having become

(indeclinable)

absolutive

Derived with the suffix -tvā

Root: bhū (class 1)

Note: An absolutiv, sometimes called a gerund, is an indeclinable verbal form.

वासुदेवम् (vāsudevam) - to Vasudeva (Kṛṣṇa)

(proper noun)

Accusative, masculine, singular of vāsudeva

vāsudeva - son of Vasudeva, Kṛṣṇa

उपागमन् (upāgaman) - they approached

(verb)

3rd person , plural, active, imperfect past (laṅ) of gam

Imperfect 3rd person plural

Prefixes: upa+ā

Root: gam (class 1)