महाभारतः mahābhārataḥ - book-7, chapter-87, verse-66

अथ हर्षपरीताङ्गः सात्यकिर्भीममब्रवीत् ।
त्वं भीम रक्ष राजानमेतत्कार्यतमं हि ते ॥६६॥

66. atha harṣaparītāṅgaḥ sātyakirbhīmamabravīt ,
tvaṁ bhīma rakṣa rājānametatkāryatamaṁ hi te.

66. atha harṣa-parītāṅgaḥ sātyakiḥ bhīmam abravīt
tvam bhīma rakṣa rājānam etat kārya-tamam hi te

66. atha harṣa-parītāṅgaḥ sātyakiḥ bhīmam abravīt bhīma,
tvam rājānam rakṣa; hi etat te kārya-tamam

66. Then, Satyaki, whose body was overcome with joy, said to Bhima: 'O Bhima, you protect the king, for this is indeed your most crucial duty.'

Words meanings summery:

• अथ (atha) - then, now, thereupon

• हर्ष-परीताङ्गः (harṣa-parītāṅgaḥ) - whose body was pervaded/overcome by joy

• सात्यकिः (sātyakiḥ) - Satyaki (a Yadava warrior)

• भीमम् (bhīmam) - to Bhima (a Pandava warrior)

• अब्रवीत् (abravīt) - he spoke, he said

• त्वम् (tvam) - you

• भीम (bhīma) - O Bhima

• रक्ष (rakṣa) - protect, guard

• राजानम् (rājānam) - referring to King Yudhishthira (the king)

• एतत् (etat) - this

• कार्य-तमम् (kārya-tamam) - most important duty, chief task

• हि (hi) - indeed, surely, because, for

• ते (te) - for you, to you, your

Words meanings and morphology

अथ (atha) - then, now, thereupon

(indeclinable)

हर्ष-परीताङ्गः (harṣa-parītāṅgaḥ) - whose body was pervaded/overcome by joy

(adjective)

Nominative, masculine, singular of harṣa-parītāṅga

harṣa-parītāṅga - having the body pervaded by joy, overcome with delight

Compound type : bahuvrīhi (harṣa+parīta+aṅga)

• harṣa – joy, delight, gladness
  noun (masculine)
• parīta – pervaded, surrounded, overcome, encompassed
  adjective (masculine)
  Past Passive Participle
  from pari- + √i (to go)
  Prefix: pari
  Root: i (class 2)
• aṅga – limb, body, part
  noun (neuter)

सात्यकिः (sātyakiḥ) - Satyaki (a Yadava warrior)

(proper noun)

Nominative, masculine, singular of sātyaki

sātyaki - Satyaki (name of a Yadava hero, a devoted warrior of Krishna)

भीमम् (bhīmam) - to Bhima (a Pandava warrior)

(proper noun)

Accusative, masculine, singular of bhīma

bhīma - terrible, formidable, Bhima (name of the second Pandava brother)

अब्रवीत् (abravīt) - he spoke, he said

(verb)

3rd person , singular, active, Imperfect (Laṅ) of brū

Root: brū (class 2)

त्वम् (tvam) - you

(pronoun)

Nominative, singular of yuṣmad

yuṣmad - you

भीम (bhīma) - O Bhima

(proper noun)

Vocative, masculine, singular of bhīma

bhīma - terrible, formidable, Bhima (name of the second Pandava brother)

रक्ष (rakṣa) - protect, guard

(verb)

2nd person , singular, active, Imperative (Lot) of rakṣ

Root: rakṣ (class 1)

राजानम् (rājānam) - referring to King Yudhishthira (the king)

(noun)

Accusative, masculine, singular of rājan

rājan - king, ruler, prince

एतत् (etat) - this

(pronoun)

Nominative, neuter, singular of etad

etad - this

कार्य-तमम् (kārya-tamam) - most important duty, chief task

(adjective)

Nominative, neuter, singular of kārya-tama

kārya-tama - most to be done, most important duty, chief task

Superlative form of 'kārya' (duty, to be done) with suffix '-tama'

हि (hi) - indeed, surely, because, for

(indeclinable)

ते (te) - for you, to you, your

(pronoun)

Dative, singular of yuṣmad

yuṣmad - you

Note: Dative of purpose or possession