महाभारतः mahābhārataḥ - book-3, chapter-173, verse-5

समेत्य पार्थेन यथैकरात्रमूषुः समास्तत्र तदा चतस्रः ।
पूर्वाश्च षट्ता दश पाण्डवानां शिवा बभूवुर्वसतां वनेषु ॥५॥

5. sametya pārthena yathaikarātra;mūṣuḥ samāstatra tadā catasraḥ ,
pūrvāśca ṣaṭtā daśa pāṇḍavānāṁ; śivā babhūvurvasatāṁ vaneṣu.

5. sametya pārthena yathā ekarātraṃ
ūṣuḥ samāḥ tatra tadā catasraḥ
pūrvāḥ ca ṣaṭ tāḥ daśa pāṇḍavānāṃ
śivā babhūvuḥ vasatāṃ vaneṣu

5. Having reunited with Arjuna, they (the Pāṇḍavas) resided there for four years, as if they had only spent a single night together. Those four years, along with the previous six, totaling ten years for the Pāṇḍavas dwelling in the forests, proved auspicious.

Words meanings summery:

• समेत्य (sametya) - having reunited (having met, having united)

• पार्थेन (pārthena) - with Arjuna (Pārtha) (by Pārtha, with Pārtha)

• यथा (yathā) - as if (as, just as, like)

• एकरात्रं (ekarātraṁ) - for a single night (one night, for one night)

• ऊषुः (ūṣuḥ) - they resided (they dwelt, they resided)

• समाः (samāḥ) - years

• तत्र (tatra) - there (in Kubera's pleasure ground) (there, in that place)

• तदा (tadā) - then (then, at that time)

• चतस्रः (catasraḥ) - four (years) (four)

• पूर्वाः (pūrvāḥ) - the previous (years) (previous, former)

• च (ca) - and

• षट् (ṣaṭ) - six (years) (six)

• ताः (tāḥ) - those (years, referring to the sum) (those)

• दश (daśa) - ten (years) (ten)

• पाण्डवानां (pāṇḍavānāṁ) - for the Pāṇḍavas (of the Pāṇḍavas)

• शिवा (śivā) - auspicious (auspicious, benevolent, prosperous)

• बभूवुः (babhūvuḥ) - proved to be, became (they became, they were)

• वसतां (vasatāṁ) - for those dwelling (the Pāṇḍavas) (of those dwelling)

• वनेषु (vaneṣu) - in the forests

Words meanings and morphology

समेत्य (sametya) - having reunited (having met, having united)

(indeclinable)

Absolutive (Gerund)

From prefix sam + root i (to go) + ya (suffix for absolutive)

Prefix: sam

Root: i (class 2)

Note: Acts adverbially, refers to the Pāṇḍavas.

पार्थेन (pārthena) - with Arjuna (Pārtha) (by Pārtha, with Pārtha)

(proper noun)

Instrumental, masculine, singular of pārtha

pārtha - Pārtha (a son of Pṛthā, especially Arjuna), son of a king

Derived from Pṛthā (Kuntī) + aṇ (patronymic suffix)

Note: Used with sametya.

यथा (yathā) - as if (as, just as, like)

(indeclinable)

एकरात्रं (ekarātraṁ) - for a single night (one night, for one night)

(noun)

Accusative, neuter, singular of ekarātra

ekarātra - one night, a single night

Compound type : tatpuruṣa (eka+rātra)

• eka – one, single
  numeral (neuter)
• rātra – night
  noun (neuter)

Note: Adverbial accusative, indicating duration.

ऊषुः (ūṣuḥ) - they resided (they dwelt, they resided)

(verb)

3rd person , plural, active, perfect (lit) of vas

Perfect Active

third person plural, Perfect active

Root: vas (class 1)

Note: Subject is the Pāṇḍavas (implied).

समाः (samāḥ) - years

(noun)

Accusative, feminine, plural of samā

samā - year, season

Note: Object of duration for ūṣuḥ.

तत्र (tatra) - there (in Kubera's pleasure ground) (there, in that place)

(indeclinable)

Note: Modifies ūṣuḥ.

तदा (tadā) - then (then, at that time)

(indeclinable)

Note: Modifies ūṣuḥ.

चतस्रः (catasraḥ) - four (years) (four)

(numeral)

Note: Agreement with samāḥ.

पूर्वाः (pūrvāḥ) - the previous (years) (previous, former)

(adjective)

Nominative, feminine, plural of pūrva

pūrva - previous, former, prior

Note: Refers to the years before Arjuna returned.

च (ca) - and

(indeclinable)

Note: Connects the numbers.

षट् (ṣaṭ) - six (years) (six)

(numeral)

Note: Referring to six years.

ताः (tāḥ) - those (years, referring to the sum) (those)

(pronoun)

Nominative, feminine, plural of tad

tad - that, those

Note: It qualifies 'daśa' in the sense of 'those ten'.

दश (daśa) - ten (years) (ten)

(numeral)

Note: Refers to ten years.

पाण्डवानां (pāṇḍavānāṁ) - for the Pāṇḍavas (of the Pāṇḍavas)

(proper noun)

Genitive, masculine, plural of pāṇḍava

pāṇḍava - Pāṇḍava (descendant of Pāṇḍu)

Derived from Pāṇḍu + a (patronymic suffix)

Note: Indicates possession or association.

शिवा (śivā) - auspicious (auspicious, benevolent, prosperous)

(adjective)

Nominative, feminine, plural of śiva

śiva - auspicious, benevolent, propitious, Shiva

Note: Predicate adjective with babhūvuḥ.

बभूवुः (babhūvuḥ) - proved to be, became (they became, they were)

(verb)

3rd person , plural, active, perfect (lit) of bhū

Perfect Active

third person plural, Perfect active

Root: bhū (class 1)

वसतां (vasatāṁ) - for those dwelling (the Pāṇḍavas) (of those dwelling)

(adjective)

Genitive, masculine, plural of vasat

vasat - dwelling, residing

Present Active Participle

Derived from root vas (to dwell) + at (suffix for present active participle)

Root: vas (class 1)

Note: Refers to the Pāṇḍavas, with implied "for them".

वनेषु (vaneṣu) - in the forests

(noun)

Locative, neuter, plural of vana

vana - forest, wood, grove

Note: Modifies vasatāṃ.