महाभारतः mahābhārataḥ - book-13, chapter-107, verse-81

उपवासं च कुर्वीत स्नातः शुचिरलंकृतः ।
पर्वकालेषु सर्वेषु ब्रह्मचारी सदा भवेत् ॥८१॥

81. upavāsaṁ ca kurvīta snātaḥ śuciralaṁkṛtaḥ ,
parvakāleṣu sarveṣu brahmacārī sadā bhavet.

81. upavāsam ca kurvīta snātaḥ śuciḥ alaṃkṛtaḥ
parvakāleṣu sarveṣu brahmacārī sadā bhavet

81. snātaḥ śuciḥ alaṃkṛtaḥ ca upavāsam kurvīta
sarveṣu parvakāleṣu sadā brahmacārī bhavet

81. One should undertake a fast (upavāsa), having bathed, purified, and adorned. On all festive occasions, one should always remain a celibate student (brahmacārī).

Words meanings summery:

• उपवासम् (upavāsam) - a fast, a religious observance, a vigil

• च (ca) - and, also

• कुर्वीत (kurvīta) - should do, should perform, should make

• स्नातः (snātaḥ) - bathed, having bathed, clean

• शुचिः (śuciḥ) - pure, clean, holy

• अलंकृतः (alaṁkṛtaḥ) - adorned, decorated, ornamented

• पर्वकालेषु (parvakāleṣu) - on auspicious days, on festive occasions, during junction periods

• सर्वेषु (sarveṣu) - in all, on all

• ब्रह्मचारी (brahmacārī) - a celibate student, one who observes celibacy and studies the Vedas

• सदा (sadā) - always, ever, constantly

• भवेत् (bhavet) - should be, should become

Words meanings and morphology

उपवासम् (upavāsam) - a fast, a religious observance, a vigil

(noun)

Accusative, masculine, singular of upavāsa

upavāsa - a fast, a religious observance, staying near, a vigil

Prefix: upa

Root: vas (class 1)

च (ca) - and, also

(indeclinable)

कुर्वीत (kurvīta) - should do, should perform, should make

(verb)

3rd person , singular, middle, optative (vidhi-liṅ) of kṛ

Root: kṛ (class 8)

स्नातः (snātaḥ) - bathed, having bathed, clean

(adjective)

Nominative, masculine, singular of snāta

snāta - bathed, purified, clean

Past Passive Participle

Root: snā (class 2)

शुचिः (śuciḥ) - pure, clean, holy

(adjective)

Nominative, masculine, singular of śuci

śuci - pure, clean, bright, holy, white

अलंकृतः (alaṁkṛtaḥ) - adorned, decorated, ornamented

(adjective)

Nominative, masculine, singular of alaṃkṛta

alaṁkṛta - adorned, decorated, ornamented, prepared

Past Passive Participle

Prefix: alam

Root: kṛ (class 8)

पर्वकालेषु (parvakāleṣu) - on auspicious days, on festive occasions, during junction periods

(noun)

Locative, masculine, plural of parvakāla

parvakāla - auspicious time, festive occasion, junction period (e.g., full moon, new moon)

Compound type : tatpuruṣa (parvan+kāla)

• parvan – knot, joint, section, festive day, festival
  noun (neuter)
• kāla – time, season, occasion
  noun (masculine)

सर्वेषु (sarveṣu) - in all, on all

(pronoun)

Locative, masculine, plural of sarva

sarva - all, every, whole

ब्रह्मचारी (brahmacārī) - a celibate student, one who observes celibacy and studies the Vedas

(noun)

Nominative, masculine, singular of brahmacārin

brahmacārin - a celibate student, one who observes celibacy, following sacred conduct, one abiding in Brahman (brahman)

Compound type : tatpuruṣa (brahman+cārin)

• brahman – ultimate reality, sacred word, Veda, prayer
  noun (neuter)
• cārin – moving, performing, practising, observing
  adjective (masculine)
  Root: car (class 1)

सदा (sadā) - always, ever, constantly

(indeclinable)

भवेत् (bhavet) - should be, should become

(verb)

3rd person , singular, active, optative (vidhi-liṅ) of bhū

Root: bhū (class 1)