Surah An-Nisa' 4:23

ﱳ ﱴ ﱵ ﱶ ﱷ ﱸ ﱹ ﱺ ﱻ ﱼ ﱽ ﱾ ﱿ ﲀ ﲁ ﲂ ﲃ ﲄ ﲅ ﲆ ﲇ ﲈ ﲉ ﲊ ﲋ ﲌ ﲍ ﲎ ﲏ ﲐ ﲑ ﲒ ﲓ ﲔ ﲕ ﲖ ﲗ ﲘ ﲙ ﲚ ﲛ ﲜ ﲝ ﲞ ﲟ ﲠ ﲡ ﲢ ﲣ ﲤ ﲥ ﲦ ﲧ ﲨ ﲩ

Prohibited to you [for marriage] are your mothers, your daughters, your sisters, your father's sisters, your mother's sisters, your brother's daughters, your sister's daughters, your [milk] mothers who nursed you, your sisters through nursing, your wives' mothers, and your step-daughters under your guardianship [born] of your wives unto whom you have gone in. But if you have not gone in unto them, there is no sin upon you. And [also prohibited are] the wives of your sons who are from your [own] loins, and that you take [in marriage] two sisters simultaneously, except for what has already occurred. Indeed, Allah is ever Forgiving and Merciful.