महाभारतः mahābhārataḥ - book-5, chapter-140, verse-18

सप्तमाच्चापि दिवसादमावास्या भविष्यति ।
संग्रामं योजयेत्तत्र तां ह्याहुः शक्रदेवताम् ॥१८॥

18. saptamāccāpi divasādamāvāsyā bhaviṣyati ,
saṁgrāmaṁ yojayettatra tāṁ hyāhuḥ śakradevatām.

18. saptamāt ca api divasāt amāvāsyā bhaviṣyati |
saṃgrāmam yojayet tatra tām hi āhuḥ śakradevatām

18. ca api saptamāt divasāt amāvāsyā bhaviṣyati
tatra saṃgrāmam yojayet hi tām śakradevatām āhuḥ

18. And on the seventh day from now, there will be a new moon. One should arrange the battle on that day, for they say it is presided over by Indra.

Words meanings summery:

• सप्तमात् (saptamāt) - from the seventh (day) (from the seventh)

• च (ca) - and (and, also)

• अपि (api) - also (also, even, too)

• दिवसात् (divasāt) - from the day

• अमावास्या (amāvāsyā) - the new moon (new moon day)

• भविष्यति (bhaviṣyati) - will be (will be, will happen)

• संग्रामम् (saṁgrāmam) - battle (battle, war)

• योजयेत् (yojayet) - one should arrange/plan (one should arrange/plan, one should join/yoke)

• तत्र (tatra) - on that (day), then (there, then, in that place)

• ताम् (tām) - that (day, referring to the new moon) (her, that (feminine))

• हि (hi) - for, indeed (indeed, surely, for)

• आहुः (āhuḥ) - they say (they say, they call)

• शक्रदेवताम् (śakradevatām) - having Indra as its deity

Words meanings and morphology

सप्तमात् (saptamāt) - from the seventh (day) (from the seventh)

(adjective)

Ablative, masculine/neuter, singular of saptama

saptama - seventh

ordinal numeral from sapta (seven)

च (ca) - and (and, also)

(indeclinable)

Note: Conjunction

अपि (api) - also (also, even, too)

(indeclinable)

दिवसात् (divasāt) - from the day

(noun)

Ablative, masculine, singular of divasa

divasa - day

Root: div

अमावास्या (amāvāsyā) - the new moon (new moon day)

(noun)

Nominative, feminine, singular of amāvāsyā

amāvāsyā - new moon day, conjunction of sun and moon

from amā (together) + vas (to dwell) + ya + ā (feminine suffix)

Root: vas (class 1)

भविष्यति (bhaviṣyati) - will be (will be, will happen)

(verb)

3rd person , singular, active, future (lṛṭ) of bhū

Future Tense, 3rd Person Singular

root √bhū, s-aorist future stem

Root: bhū (class 1)

संग्रामम् (saṁgrāmam) - battle (battle, war)

(noun)

Accusative, masculine, singular of saṃgrāma

saṁgrāma - battle, war, conflict

from sam- + √grām (to go)

Prefix: sam

Root: grām

योजयेत् (yojayet) - one should arrange/plan (one should arrange/plan, one should join/yoke)

(verb)

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

Causative, Optative Mood, 3rd Person Singular

root √yuj, causative form yōjayat, optative (vidhi-liṅ)

Root: yuj (class 7)

Note: Refers to an implied agent, 'one'

तत्र (tatra) - on that (day), then (there, then, in that place)

(indeclinable)

formed from tad (that) + tral (suffix for place/time)

ताम् (tām) - that (day, referring to the new moon) (her, that (feminine))

(pronoun)

Accusative, feminine, singular of tad

tad - that, he, she, it

Note: Refers to amāvāsyā

हि (hi) - for, indeed (indeed, surely, for)

(indeclinable)

आहुः (āhuḥ) - they say (they say, they call)

(verb)

3rd person , plural, active, perfect (liṭ) of brū

Perfect Tense, 3rd Person Plural (irregular)

Irregular perfect form of root √brū (also often treated as root ah)

Root: brū / ah (class 2)

शक्रदेवताम् (śakradevatām) - having Indra as its deity

(adjective)

Accusative, feminine, singular of śakradevatā

śakradevatā - that which has Śakra (Indra) as its deity

Bahuvrīhi compound

Compound type : Bahuvrīhi (śakra+devatā)

• śakra – Indra (chief of the devas)
  proper noun (masculine)
• devatā – deity, divinity
  noun (feminine)
  from deva (god) + tā (suffix forming feminine abstract noun, here means 'state of being a god' or simply 'deity')

Note: Refers to amāvāsyā