It is narrated from ‘Ikrimah (may Allah have mercy on him) regarding «﴿فَأْتُوا حَرْثَكُمْ أَنَّى شِئْتُمْ ...﴾» [البقرة: 223/2] , that it means a man may have intercourse with his wife standing, sitting, from the front or from behind, from whichever direction he wishes.