बृहत्संहिता (आचार्य वराहमिहिर - स्थापत्य, खगोल, मौसम व जल विज्ञान)

Adh. LXXVIII. Sl. 24-26.] अष्टसप्ततितमोऽध्यायः 619
Sloka 23.—They say that sexual union on even
nights (after menses) procreates males, while on odd
nights, females. On distant even nights, it leads to the
birth of children who will be long-lived, handsome and
happy.
Probably the second half gives the author's own opinion in
which distant even nights are good for future issue.
दक्षिणपार्श्वे पुरुषो वामे नारी यमावुभयसंस्थौ ॥
यदुदरमध्योपगतं नपुंसकं तन्निबोद्धव्यम् ॥२४॥
Sloka 24.—A foetus situated in the right side of the
womb will be a male; while one on the left, a female.
One situated on both the sides will be twins and one in
the middle is to be understood to be a eunuch.
केन्द्रत्रिकोणेषु शुभस्थितेषु लग्ने शशाङ्के च शुभैः समेते ।
पापैस्त्रिलाभारिगतैश्च यायात्पुंजन्यमयोगेषु च सम्प्रयोगम् ॥२५॥
Sloka 25.—A man ought to have sexual union with
his wife when the Kendras and the Trikona houses are
occupied by benefics, when the Moon and the Lagna are
conjoined with benefics, when malefics are posited in the
3rd, 6th and 11th houses and when there are planetary
combinations ensuring the birth of a male.
For पुंजन्यमयोग, vide बृ. जा. IV-11.
न नखदशनविक्षतानि कुर्यादृत्तुसमये पुरुषः स्त्रियाः कथञ्चित ।
ऋतुरपि दश षट् च वासराणि प्रथमानिशात्रितयं न तत्र गम्यम् ॥
Sloka 26.—A man should on no account make
marks on his wife's body with his nails and teeth during
her period of impregnation. Such a period lasts for
sixteen days, of which the first three nights are unfit
for union.