Incredibly specific inheritance laws. Verses 11, 12, and 176 in the fourth book of the Quran lay out exactly how a Muslim should dispose of his wealth after death. Two-thirds must be distributed as follows, when applicable: One-sixth should go to your father; one-sixth to your mother; half or one-quarter to your husband, depending on whether you’ve had children; and one-quarter or one-eighth to your wife, also depending on whether you’ve had children. As for those hypothetical kids, the fractions vary, but boys get two shares for every one share that girls get.