Alan K. Henderson's Weblog

Lashes for adultery? Then why do some Islamic states sentence adulteresses to be stoned to death? Because of a hadith that says that the Qur'an originally mandated stoning for adulterers, but the passage somehow dropped out. Umar, the second successor of Muhammad as caliph, the leader of the believers, explained: "I am afraid that after a long time has passed, people may say, ‘We do not find the Verses of the Rajam (stoning to death) in the Holy Book,' and consequently they may go astray by leaving an obligation that Allah has revealed."

Umar didn't want to see that happening, so he lent his own weight to the legitimacy of stoning for adultery: "Lo! I confirm that the penalty of Rajam be inflicted on him who commits illegal sexual intercourse, if he is already married and the crime is proved by witnesses or pregnancy or confession." Umar added, "Surely Allah's Apostle [that is, Muhammad] carried out the penalty of Rajam, and so did we after him."

[I]f a woman accuses a man of rape, she may end up incriminating herself. If the required male witnesses can’t be found, the victim’s charge of rape becomes an admission of adultery.