महाभारतः mahābhārataḥ - book-6, chapter-1, verse-16

ततः प्रहृष्टां स्वां सेनामभिवीक्ष्याथ पाण्डवाः ।
बभूवुर्हृष्टमनसो वासुदेवश्च वीर्यवान् ॥१६॥

16. tataḥ prahṛṣṭāṁ svāṁ senāmabhivīkṣyātha pāṇḍavāḥ ,
babhūvurhṛṣṭamanaso vāsudevaśca vīryavān.

16. tataḥ prahṛṣṭām svām senām abhivīkṣya atha pāṇḍavāḥ
babhūvuḥ hṛṣṭamanasaḥ vāsudevaḥ ca vīryavān

16. tataḥ atha svām prahṛṣṭām senām abhivīkṣya pāṇḍavāḥ
ca vīryavān vāsudevaḥ hṛṣṭamanasaḥ babhūvuḥ

16. Then, having observed their own greatly delighted army, the Pāṇḍavas and the valorous Vāsudeva (Kṛṣṇa) became cheerful-minded.

Words meanings summery:

• ततः (tataḥ) - then, thereafter, from that

• प्रहृष्टाम् (prahṛṣṭām) - greatly delighted, very pleased

• स्वाम् (svām) - their own

• सेनाम् (senām) - army

• अभिवीक्ष्य (abhivīkṣya) - having observed, having seen

• अथ (atha) - and, then, now

• पाण्डवाः (pāṇḍavāḥ) - the Pāṇḍavas

• बभूवुः (babhūvuḥ) - they became

• हृष्टमनसः (hṛṣṭamanasaḥ) - cheerful-minded, joyful

• वासुदेवः (vāsudevaḥ) - Vāsudeva (Kṛṣṇa)

• च (ca) - and

• वीर्यवान् (vīryavān) - valorous, powerful

Words meanings and morphology

ततः (tataḥ) - then, thereafter, from that

(indeclinable)

प्रहृष्टाम् (prahṛṣṭām) - greatly delighted, very pleased

(verbal derivative)

Note: Agrees with 'senām'.

स्वाम् (svām) - their own

(pronoun)

Accusative, feminine, singular of sva

sva - one's own

Note: Qualifies 'senām'.

सेनाम् (senām) - army

(noun)

Accusative, feminine, singular of senā

senā - army, host

अभिवीक्ष्य (abhivīkṣya) - having observed, having seen

(indeclinable)

absolutive

from √īkṣ with abhi- and vi-

Prefixes: abhi+vi

Root: √īkṣ (class 1)

अथ (atha) - and, then, now

(indeclinable)

पाण्डवाः (pāṇḍavāḥ) - the Pāṇḍavas

(proper noun)

Nominative, masculine, plural of pāṇḍava

pāṇḍava - son of Pāṇḍu, a Pāṇḍava

बभूवुः (babhūvuḥ) - they became

(verb)

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

Perfect Active

from √bhū, reduplicated form

Root: √bhū (class 1)

हृष्टमनसः (hṛṣṭamanasaḥ) - cheerful-minded, joyful

(compound adjective)

Compound type : bahuvrihi (hṛṣṭa+manas)

• hṛṣṭa – delighted, gladdened
  verbal derivative
  past passive participle
  from √hṛṣ
  Root: √hṛṣ (class 4)
• manas – mind, spirit, intellect
  noun (neuter)

Note: Agrees with 'pāṇḍavāḥ' and 'vāsudevaḥ'.

वासुदेवः (vāsudevaḥ) - Vāsudeva (Kṛṣṇa)

(proper noun)

Nominative, masculine, singular of vāsudeva

vāsudeva - son of Vasudeva (Kṛṣṇa)

च (ca) - and

(indeclinable)

वीर्यवान् (vīryavān) - valorous, powerful

(adjective)

Nominative, masculine, singular of vīryavat

vīryavat - valorous, powerful, heroic, mighty

Note: Qualifies 'vāsudevaḥ'.