महाभारतः mahābhārataḥ - book-9, chapter-39, verse-3

वैशंपायन उवाच ।
पुरा कृतयुगे राजन्नार्ष्टिषेणो द्विजोत्तमः ।
वसन्गुरुकुले नित्यं नित्यमध्ययने रतः ॥३॥

3. vaiśaṁpāyana uvāca ,
purā kṛtayuge rājannārṣṭiṣeṇo dvijottamaḥ ,
vasangurukule nityaṁ nityamadhyayane rataḥ.

3. vaiśaṃpāyana uvāca purā kṛtayuge rājan ārṣṭiṣeṇaḥ
dvijottamaḥ vasan gurukule nityam nityam adhyayane rataḥ

3. vaiśaṃpāyana uvāca rājan purā kṛtayuge ārṣṭiṣeṇaḥ
dvijottamaḥ nityam gurukule vasan nityam adhyayane rataḥ

3. Vaiśampāyana said: O King, formerly, in the Kṛta Yuga, Arṣṭiṣeṇa, the foremost among the twice-born (dvija), constantly resided in the guru's āśrama and was always devoted to study.

Words meanings summery:

• वैशंपायन (vaiśaṁpāyana) - Vaiśampāyana

• उवाच (uvāca) - said, spoke

• पुरा (purā) - formerly, in ancient times

• कृतयुगे (kṛtayuge) - in the Kṛta Yuga, in the Golden Age

• राजन् (rājan) - O Janamejaya (O King)

• आर्ष्टिषेणः (ārṣṭiṣeṇaḥ) - the sage Arṣṭiṣeṇa (Arṣṭiṣeṇa)

• द्विजोत्तमः (dvijottamaḥ) - best of the twice-born (dvija), foremost Brahmin

• वसन् (vasan) - dwelling, residing

• गुरुकुले (gurukule) - in the teacher's āśrama (in the guru's household/school)

• नित्यम् (nityam) - always, constantly

• नित्यम् (nityam) - always, constantly

• अध्ययन्é (adhyayané) - in study, in recitation

• रतः (rataḥ) - devoted, engaged, absorbed, delighted in

Words meanings and morphology

वैशंपायन (vaiśaṁpāyana) - Vaiśampāyana

(proper noun)

Nominative, masculine, singular of vaiśaṃpāyana

vaiśaṁpāyana - Vaiśampāyana (a sage, disciple of Vyāsa, narrator of the Mahābhārata)

उवाच (uvāca) - said, spoke

(verb)

3rd person , singular, active, perfect (liṭ) of vac

Root: vac (class 2)

पुरा (purā) - formerly, in ancient times

(indeclinable)

कृतयुगे (kṛtayuge) - in the Kṛta Yuga, in the Golden Age

(noun)

Locative, masculine, singular of kṛtayuga

kṛtayuga - Kṛta Yuga (the first and most virtuous of the four Hindu epochs, also known as Satya Yuga)

Compound type : tatpuruṣa (kṛta+yuga)

• kṛta – done, made, accomplished; golden, perfect
  adjective
  Past Passive Participle
  From root kṛ (to do) with suffix -ta
  Root: kṛ (class 8)
• yuga – age, epoch, period, yoke, pair
  noun (masculine)

राजन् (rājan) - O Janamejaya (O King)

(noun)

Vocative, masculine, singular of rājan

rājan - king, ruler, sovereign

आर्ष्टिषेणः (ārṣṭiṣeṇaḥ) - the sage Arṣṭiṣeṇa (Arṣṭiṣeṇa)

(proper noun)

Nominative, masculine, singular of ārṣṭiṣeṇa

ārṣṭiṣeṇa - Arṣṭiṣeṇa (a sage)

द्विजोत्तमः (dvijottamaḥ) - best of the twice-born (dvija), foremost Brahmin

(noun)

Nominative, masculine, singular of dvijottama

dvijottama - best of the twice-born; foremost Brahmin

Compound type : tatpuruṣa (dvija+uttama)

• dvija – twice-born; a brahmin, a bird, a tooth
  noun (masculine)
  Formed from dvi (twice) + jan (to be born)
• uttama – best, highest, supreme, excellent
  adjective

वसन् (vasan) - dwelling, residing

(adjective)

Nominative, masculine, singular of vas

vas - to dwell, reside, live

Root: vas (class 1)

गुरुकुले (gurukule) - in the teacher's āśrama (in the guru's household/school)

(noun)

Locative, neuter, singular of gurukula

gurukula - guru's family or household; teacher's residence/school (āśrama)

Compound type : tatpuruṣa (guru+kula)

• guru – teacher, spiritual preceptor (guru); heavy, venerable
  noun (masculine)
• kula – family, lineage, race, household, school
  noun (neuter)

नित्यम् (nityam) - always, constantly

(indeclinable)

नित्यम् (nityam) - always, constantly

(indeclinable)

अध्ययन्é (adhyayané) - in study, in recitation

(noun)

Locative, neuter, singular of adhyayana

adhyayana - study, reading, recitation (especially of the Vedas)

Prefix: adhi

Root: i (class 2)

रतः (rataḥ) - devoted, engaged, absorbed, delighted in

(adjective)

Nominative, masculine, singular of rata

rata - pleased, delighted, fond of, attached to, engaged in

Past Passive Participle

From root ram (to delight, enjoy) with suffix -ta

Root: ram (class 1)