With the aid of three different translations Umberto Eco proves that headscarf wearing was never recommended in the Koran. He refers to Sura 24 (presumably verse 31) which deals with covering the chest. Head covering was a Christian idea. “The vicar general of the Italian Sufi brotherhood Jerrahi Halveti, Gabriele Mandel Khan, points out (in his commentary on Islam) with a certain satisfaction that it was the Apostle Paul (in chapter 11 of his first letter to the Corinthians), but Paul limited this command to women praying and prophesying. Long before the Koran was written, Tertullian (who despite being sympathetic to the beliefs of the Montanists was most definitely a Christian) outlined in his writings “On the Apparel of Women”: God bids you to be veiled. I believe He does so for fear the heads of some should be seen!’”

Here’s Eco’s text in Italian.