महाभारतः mahābhārataḥ - book-1, chapter-112, verse-31

आत्मीये च वरारोहे शयनीये चतुर्दशीम् ।
अष्टमीं वा ऋतुस्नाता संविशेथा मया सह ॥३१॥

31. ātmīye ca varārohe śayanīye caturdaśīm ,
aṣṭamīṁ vā ṛtusnātā saṁviśethā mayā saha.

31. ātmīye ca varārohe śayanīye caturdaśīm
aṣṭamīm vā ṛtusnātā saṃviśethā mayā saha

31. And, O beautiful lady, you should lie down with me on your own couch on the fourteenth or eighth day, after bathing following your menstruation.

Words meanings summery:

• आत्मीये (ātmīye) - on your own (on one's own, personal, belonging to the self)

• च (ca) - and (and, also, moreover)

• वरारोहे (varārohe) - O beautiful lady (O beautiful-hipped lady, O beautiful one)

• शयनीये (śayanīye) - on the couch (on the couch, on the bed)

• चतुर्दशीम् (caturdaśīm) - on the fourteenth day (fourteenth day (of a lunar fortnight))

• अष्टमीम् (aṣṭamīm) - or the eighth day (eighth day (of a lunar fortnight))

• वा (vā) - or (or, either, at least)

• ऋतुस्नाता (ṛtusnātā) - after bathing following menstruation (a woman who has bathed after her menstruation, bathed after the season)

• संविशेथा (saṁviśethā) - you should lie down (you should lie down, you should enter)

• मया (mayā) - with me (by me, with me)

• सह (saha) - with (with, together with)

Words meanings and morphology

आत्मीये (ātmīye) - on your own (on one's own, personal, belonging to the self)

(adjective)

Locative, feminine, singular of ātmīya

ātmīya - one's own, personal, belonging to the self; dear, familiar

Note: Agrees with śayanīye

च (ca) - and (and, also, moreover)

(indeclinable)

वरारोहे (varārohe) - O beautiful lady (O beautiful-hipped lady, O beautiful one)

(noun)

Vocative, feminine, singular of varārohā

varārohā - a beautiful-hipped woman, a woman with beautiful thighs

Compound type : karmadhāraya (vara+ārohā)

• vara – excellent, best, finest
  adjective (masculine)
• ārohā – buttocks, hips, hind-quarters
  noun (feminine)

शयनीये (śayanīye) - on the couch (on the couch, on the bed)

(noun)

Locative, neuter, singular of śayanīya

śayanīya - a bed, couch, sofa

Gerundive

From root śī with suffix -anīya

Root: śī (class 2)

चतुर्दशीम् (caturdaśīm) - on the fourteenth day (fourteenth day (of a lunar fortnight))

(noun)

Accusative, feminine, singular of caturdaśī

caturdaśī - the fourteenth day of a lunar fortnight

अष्टमीम् (aṣṭamīm) - or the eighth day (eighth day (of a lunar fortnight))

(noun)

Accusative, feminine, singular of aṣṭamī

aṣṭamī - the eighth day of a lunar fortnight

वा (vā) - or (or, either, at least)

(indeclinable)

ऋतुस्नाता (ṛtusnātā) - after bathing following menstruation (a woman who has bathed after her menstruation, bathed after the season)

(noun)

Nominative, feminine, singular of ṛtusnāta

ṛtusnāta - a woman who has bathed after her menstruation

Compound type : tatpuruṣa (ṛtu+snāta)

• ṛtu – season, proper time, menstrual period
  noun (masculine)
• snāta – bathed, purified by bathing
  adjective (masculine)
  Past Passive Participle
  Derived from root snā
  Root: snā (class 2)

संविशेथा (saṁviśethā) - you should lie down (you should lie down, you should enter)

(verb)

2nd person , singular, active, optative (vidhi liṅ) of saṃviś

Prefix: sam

Root: viś (class 6)

मया (mayā) - with me (by me, with me)

(pronoun)

Instrumental, singular of mad

mad - I, me

सह (saha) - with (with, together with)

(indeclinable)