महाभारतः mahābhārataḥ - book-2, chapter-31, verse-2

प्रययुः प्रीतमनसो यज्ञं ब्रह्मपुरःसराः ।
संश्रुत्य धर्मराजस्य यज्ञं यज्ञविदस्तदा ॥२॥

2. prayayuḥ prītamanaso yajñaṁ brahmapuraḥsarāḥ ,
saṁśrutya dharmarājasya yajñaṁ yajñavidastadā.

2. prayayuḥ prītamanasaḥ yajñam brahmapuraḥsarāḥ
saṃśrutya dharmarājasya yajñam yajñavidaḥ tadā

2. Then, having heard about the Vedic ritual (yajña) of Yudhiṣṭhira, the king of natural law (dharma), those who knew about Vedic rituals (yajña), with pleased minds and with Brahmins at the forefront, went forth to the Vedic ritual (yajña).

Words meanings summery:

• प्रययुः (prayayuḥ) - went forth, proceeded

• प्रीतमनसः (prītamanasaḥ) - with pleased minds, cheerful, happy-hearted

• यज्ञम् (yajñam) - sacrifice, ritual

• ब्रह्मपुरःसराः (brahmapuraḥsarāḥ) - preceded by Brahmins, with Brahmins at the forefront

• संश्रुत्य (saṁśrutya) - having heard, having been informed

• धर्मराजस्य (dharmarājasya) - of Yudhiṣṭhira, who is known by the epithet Dharmarāja (of the king of natural law (dharma))

• यज्ञम् (yajñam) - sacrifice, ritual

• यज्ञविदः (yajñavidaḥ) - knowers of sacrifices, experts in rituals

• तदा (tadā) - then, at that time

Words meanings and morphology

प्रययुः (prayayuḥ) - went forth, proceeded

(verb)

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

Perfect

Prefix: pra

Root: yā (class 2)

प्रीतमनसः (prītamanasaḥ) - with pleased minds, cheerful, happy-hearted

(adjective)

Nominative, masculine, plural of prītamanas

prītamanas - pleased in mind, cheerful, happy-hearted

Compound type : bahuvrīhi (prīta+manas)

• prīta – pleased, delighted, satisfied
  adjective (masculine)
  Past Passive Participle
  Derived from root √prī (to please, delight).
  Root: prī (class 4)
• manas – mind, intellect, heart, disposition
  noun (neuter)

यज्ञम् (yajñam) - sacrifice, ritual

(noun)

Accusative, masculine, singular of yajña

yajña - sacrifice, offering, ritual, worship (yajña)

Root: yaj (class 1)

ब्रह्मपुरःसराः (brahmapuraḥsarāḥ) - preceded by Brahmins, with Brahmins at the forefront

(adjective)

Nominative, masculine, plural of brahmapuraḥsara

brahmapuraḥsara - preceded by Brahmins, having Brahmins as leaders

Compound type : bahuvrīhi (brahman+purasara)

• brahman – Brahmin (a member of the priestly class), sacred text, the Absolute (brahman)
  noun (masculine)
• purasara – going before, leading, chief, leader
  adjective (masculine)
  Derived from puras (before) and root sṛ (to go).
  Prefix: puras
  Root: sṛ (class 1)

संश्रुत्य (saṁśrutya) - having heard, having been informed

(indeclinable)

Gerund (absolutive)

Derived from the root śru (to hear) with prefix sam and suffix -ya.

Prefix: sam

Root: śru (class 5)

धर्मराजस्य (dharmarājasya) - of Yudhiṣṭhira, who is known by the epithet Dharmarāja (of the king of natural law (dharma))

(noun)

Genitive, masculine, singular of dharmarāja

dharmarāja - king of righteousness, king of natural law (dharma), Yudhiṣṭhira

Compound type : tatpuruṣa (dharma+rājan)

• dharma – natural law, constitution, duty, righteousness, virtue, cosmic order (dharma)
  noun (masculine)
• rājan – king, ruler
  noun (masculine)

यज्ञम् (yajñam) - sacrifice, ritual

(noun)

Accusative, masculine, singular of yajña

yajña - sacrifice, offering, ritual, worship (yajña)

Root: yaj (class 1)

यज्ञविदः (yajñavidaḥ) - knowers of sacrifices, experts in rituals

(noun)

Nominative, masculine, plural of yajñavid

yajñavid - knower of sacrifice, expert in ritual

Compound type : tatpuruṣa (yajña+vid)

• yajña – sacrifice, offering, ritual, worship (yajña)
  noun (masculine)
  Root: yaj (class 1)
• vid – knowing, understanding, a knower, wise person
  noun (masculine)
  Derived from root √vid (to know).
  Root: vid (class 2)

तदा (tadā) - then, at that time

(indeclinable)