Is it this one? Yazid bin Abi Habib reports that the Prophet (Sallalahu Alayhi Wassallam) passed by two women who were praying salah. He said, 'When you prostrate, let part of your body cling to the earth, for women are unlike men in this regard'. (Abu Dawood in his al Maraseel pl8 (Muassasah al Risalah edition), and Baihaqi 3201) http://www.askimam.org/fatwa/fatwa.p...05595c28345f5f