महाभारतः mahābhārataḥ - book-13, chapter-148, verse-16

अमृतं ब्राह्मणा गाव इत्येतत्त्रयमेकतः ।
तस्माद्गोब्राह्मणं नित्यमर्चयेत यथाविधि ॥१६॥

16. amṛtaṁ brāhmaṇā gāva ityetattrayamekataḥ ,
tasmādgobrāhmaṇaṁ nityamarcayeta yathāvidhi.

16. amṛtam brāhmaṇāḥ gāvaḥ iti etat trayam ekataḥ
tasmāt gobrāhmaṇam nityam arcayeta yathāvidhi

16. amṛtam brāhmaṇāḥ gāvaḥ iti etat trayam ekataḥ.
tasmāt nityam yathāvidhi gobrāhmaṇam arcayeta

16. Nectar, Brahmins, and cows—these three are considered as a unified triad. Therefore, one should always venerate Brahmins and cows in the prescribed manner.

Words meanings summery:

• अमृतम् (amṛtam) - nectar, immortality

• ब्राह्मणाः (brāhmaṇāḥ) - Brahmins, members of the priestly class

• गावः (gāvaḥ) - cows, cattle

• इति (iti) - introduces a list or quote (thus, in this manner, so saying)

• एतत् (etat) - this (referring to the triad) (this, these)

• त्रयम् (trayam) - triad, group of three

• एकतः (ekataḥ) - considered as one entity (as one, from one side, unitedly)

• तस्मात् (tasmāt) - therefore, from that

• गोब्राह्मणम् (gobrāhmaṇam) - cows and Brahmins

• नित्यम् (nityam) - always, constantly, perpetually

• अर्चयेत (arcayeta) - one should worship, one should honor

• यथाविधि (yathāvidhi) - according to rule, properly, ritually

Words meanings and morphology

अमृतम् (amṛtam) - nectar, immortality

(noun)

Nominative, neuter, singular of amṛta

amṛta - nectar, immortality, imperishable

a (not) + mṛta (dead)

Compound type : bahuvrīhi (a+mṛta)

• a – not, non
  indeclinable
• mṛta – dead, deceased
  adjective (neuter)
  past passive participle
  from root mṛ (to die)
  Root: mṛ (class 6)

Note: Part of the triad.

ब्राह्मणाः (brāhmaṇāḥ) - Brahmins, members of the priestly class

(noun)

Nominative, masculine, plural of brāhmaṇa

brāhmaṇa - Brahmin, one belonging to the priestly class

derived from brahman

Note: Part of the triad.

गावः (gāvaḥ) - cows, cattle

(noun)

Nominative, feminine, plural of go

go - cow, ox, cattle, earth

Note: Part of the triad.

इति (iti) - introduces a list or quote (thus, in this manner, so saying)

(indeclinable)

Note: Marks the preceding list as a group.

एतत् (etat) - this (referring to the triad) (this, these)

(pronoun)

Nominative, neuter, singular of etad

etad - this, these

Note: Refers to the preceding list.

त्रयम् (trayam) - triad, group of three

(noun)

Nominative, neuter, singular of traya

traya - triad, group of three

from tri (three)

Note: Predicate nominative for 'etat'.

एकतः (ekataḥ) - considered as one entity (as one, from one side, unitedly)

(indeclinable)

from eka (one) + tasi (suffix)

Note: Adverbial qualifier for trayam.

तस्मात् (tasmāt) - therefore, from that

(pronoun)

Ablative, neuter, singular of tad

tad - that, he, she, it

Note: Functions as a conjunction meaning "therefore".

गोब्राह्मणम् (gobrāhmaṇam) - cows and Brahmins

(noun)

Accusative, neuter, singular of gobrāhmaṇa

gobrāhmaṇa - cows and Brahmins

Compound type : dvandva (go+brāhmaṇa)

• go – cow, ox, cattle
  noun (feminine)
• brāhmaṇa – Brahmin, member of the priestly class
  noun (masculine)

Note: Object of arcayeta. Treated as collective neuter singular in dvandva.

नित्यम् (nityam) - always, constantly, perpetually

(indeclinable)

Note: Functions as an adverb here.

अर्चयेत (arcayeta) - one should worship, one should honor

(verb)

3rd person , singular, active, optative (vidhiliṅ) of arc

Causative stem from root arc, or directly class 1 verb arc

Root: arc (class 1)

Note: Implies an unstated subject like 'one' or 'he'.

यथाविधि (yathāvidhi) - according to rule, properly, ritually

(indeclinable)

Compound type : avyayībhāva (yathā+vidhi)

• yathā – as, according to
  indeclinable
• vidhi – rule, injunction, method
  noun (masculine)
  Prefix: vi
  Root: dhā (class 3)

Note: Adverbial.