The women who commit lewdness, you shall bring four witnesses over them from amongst you; if they bear witness, then you shall restrict them in the homes until death takes them, or God makes for them a way out.
Translation endnotes
[4:15] The relative pronoun in this verse is allati, which refers to a group of women. It indicates an organized prostitution, which might pose a grave health problem for the society. In a society that accepted the jurisdiction of the Quran, if a woman is proven four times to be involved in promiscuous sexual activity, she is considered a hazard to the society and should be quarantined. Perhaps there is also an implication for our time, where genetic identification helps us to find the real father of a child. Our genes are made of various combinations of four acid molecules: Adenine, Guanine, Cytosine, and Thiamine. These four molecules, which are made of four different elements, function as witnesses for the identity of individuals to which they belong. The Quran does not necessarily require the witness to be an eyewitness. For instance, we bear witness to the oneness of God via our intelligence. The witness mentioned in 12:26-27 is not considered a witness because he was present during the alleged incident. That witness did not say, "I saw with my eyes." The human witness mentioned in that story is proposing the testimony of circumstantial evidence, and logical conclusions based on both inductive and deductive reasoning. In other words, the Quran accepts the testimony of reliable circumstantial evidence just as it accepts the testimony of a reliable eyewitness.