महाभारतः mahābhārataḥ - book-5, chapter-27, verse-16

तच्चेदेवं देशरूपेण पार्थाः करिष्यध्वं कर्म पापं चिराय ।
निवसध्वं वर्षपूगान्वनेषु दुःखं वासं पाण्डवा धर्महेतोः ॥१६॥

16. taccedevaṁ deśarūpeṇa pārthāḥ; kariṣyadhvaṁ karma pāpaṁ cirāya ,
nivasadhvaṁ varṣapūgānvaneṣu; duḥkhaṁ vāsaṁ pāṇḍavā dharmahetoḥ.

16. tat cet evam deśarūpeṇa pārthāḥ
kariṣyadhvam karma pāpam cirāya
nivasadhvam varṣapūgān vaneṣu
duḥkham vāsam pāṇḍavāḥ dharmahetoḥ

16. If this is indeed the case, O Pārthas, that you engage in sinful acts for a long time in this situation, then, O Pāṇḍavas, for the sake of natural law (dharma), you must reside in the forests for years, enduring a sorrowful dwelling.

Words meanings summery:

• तत् (tat) - that (referring to the previous statement) (that, therefore, so)

• चेत् (cet) - if (if, supposing)

• एवम् (evam) - so, in this manner (thus, so, in this manner)

• देशरूपेण (deśarūpeṇa) - in this situation, pertaining to the region (by the form of the country/region/situation)

• पार्थाः (pārthāḥ) - O sons of Pṛthā (Kuntī), referring to the Pāṇḍavas (O sons of Pṛthā (Kuntī), O Arjuna)

• करिष्यध्वम् (kariṣyadhvam) - you (plural) will perform/engage in (you will perform, you will do)

• कर्म (karma) - deeds, actions (karma) (action, deed)

• पापम् (pāpam) - sinful (deeds) (sinful, evil)

• चिराय (cirāya) - for a long time (for a long time, for ever)

• निवसध्वम् (nivasadhvam) - you (plural) must dwell/reside (you will dwell, reside)

• वर्षपूगान् (varṣapūgān) - many years, for long periods of years (groups of years, many years)

• वनेषु (vaneṣu) - in the forests

• दुःखम् (duḥkham) - sorrowful, miserable (sorrowful, miserable, suffering, pain)

• वासम् (vāsam) - dwelling, existence (dwelling, residence, abode)

• पाण्डवाः (pāṇḍavāḥ) - O Pāṇḍavas (O sons of Pāṇḍu, the Pāṇḍavas)

• धर्महेतोः (dharmahetoḥ) - for the sake of natural law (dharma) (for the sake of dharma, on account of righteousness)

Words meanings and morphology

तत् (tat) - that (referring to the previous statement) (that, therefore, so)

(pronoun)

Nominative, neuter, singular of tad

tad - that, this, he, she, it

चेत् (cet) - if (if, supposing)

(indeclinable)

एवम् (evam) - so, in this manner (thus, so, in this manner)

(indeclinable)

देशरूपेण (deśarūpeṇa) - in this situation, pertaining to the region (by the form of the country/region/situation)

(noun)

Instrumental, neuter, singular of deśarūpa

deśarūpa - form/nature of a country/place/condition

Compound type : tatpurusha (deśa+rūpa)

• deśa – country, region, place, condition
  noun (masculine)
• rūpa – form, shape, nature, characteristic
  noun (neuter)

पार्थाः (pārthāḥ) - O sons of Pṛthā (Kuntī), referring to the Pāṇḍavas (O sons of Pṛthā (Kuntī), O Arjuna)

(proper noun)

Vocative, masculine, plural of pārtha

pārtha - son of Pṛthā (Kuntī), specifically Arjuna, Yudhiṣṭhira, Bhīma

derived from Pṛthā (Kuntī)

करिष्यध्वम् (kariṣyadhvam) - you (plural) will perform/engage in (you will perform, you will do)

(verb)

2nd person , plural, middle, future (lṛṭ) of kṛ

Future

2nd person plural, Ātmanepada, Future tense

Root: kṛ (class 8)

कर्म (karma) - deeds, actions (karma) (action, deed)

(noun)

Accusative, neuter, singular of karman

karman - action, deed, work, ritual, fate (karma)

Root: kṛ (class 8)

पापम् (pāpam) - sinful (deeds) (sinful, evil)

(adjective)

Accusative, neuter, singular of pāpa

pāpa - evil, wicked, sinful, sin, vice

Note: modifies karma

चिराय (cirāya) - for a long time (for a long time, for ever)

(indeclinable)

dative singular of cira, used adverbially

Note: adverbial use of dative singular

निवसध्वम् (nivasadhvam) - you (plural) must dwell/reside (you will dwell, reside)

(verb)

2nd person , plural, middle, imperative (loṭ) of vas

Imperative

2nd person plural, Ātmanepada, Imperative mood

Prefix: ni

Root: vas (class 1)

वर्षपूगान् (varṣapūgān) - many years, for long periods of years (groups of years, many years)

(noun)

Accusative, masculine, plural of varṣapūga

varṣapūga - a group of years, many years

Compound type : tatpurusha (varṣa+pūga)

• varṣa – year, rain
  noun (neuter)
• pūga – heap, multitude, group
  noun (masculine)

Note: adverbial accusative of duration

वनेषु (vaneṣu) - in the forests

(noun)

Locative, neuter, plural of vana

vana - forest, wood, grove

दुःखम् (duḥkham) - sorrowful, miserable (sorrowful, miserable, suffering, pain)

(adjective)

Accusative, neuter, singular of duḥkha

duḥkha - sorrow, pain, suffering, misery

Note: modifies vāsam

वासम् (vāsam) - dwelling, existence (dwelling, residence, abode)

(noun)

Accusative, masculine, singular of vāsa

vāsa - dwelling, residence, abode, living

from root vas (to dwell)

Root: vas (class 1)

Note: object of implied 'experience' or 'lead'

पाण्डवाः (pāṇḍavāḥ) - O Pāṇḍavas (O sons of Pāṇḍu, the Pāṇḍavas)

(proper noun)

Vocative, masculine, plural of pāṇḍava

pāṇḍava - descendant of Pāṇḍu, the Pāṇḍavas

derived from Pāṇḍu

धर्महेतोः (dharmahetoḥ) - for the sake of natural law (dharma) (for the sake of dharma, on account of righteousness)

(noun)

Ablative, masculine, singular of dharmahetu

dharmahetu - cause of duty/righteousness, for the sake of dharma

Compound type : tatpurusha (dharma+hetu)

• dharma – natural law, constitution, duty, righteousness, virtue (dharma)
  noun (masculine)
  Root: dhṛ (class 1)
• hetu – cause, reason, motive, instrument
  noun (masculine)
  Root: hi (class 5)

Note: ablative-genitive singular, used adverbially