Permissibility Of Marrying Daughter In Law's Mother / Father
There’s no prohibition in Islam for marrying one’s daughter-in-law’s mother/father. Quran 4:23 Translation by Muhammad Asad Forbidden to you are your mothers, and your daughters, and your sisters, and your aunts paternal and maternal, and a brother’s daughters, and a sister’s daughters; and your milk-mothers, and your milk-sisters; and the mothers of your wives; and your step-daughters – who are your foster children – born of your wives with whom you have consummated your marriage; but if you have not consummated your marriage, you will incur no sin [by marrying their daughters]; and [forbidden to you are] the spouses of the sons who have sprung from your loins; and [you are forbidden] to have two sisters [as your wives] at one and the same time – but what is past is past: for, behold, God is indeed much-forgiving, a dispenser of grace.