The Jews used to say that if a man approached his wife while she was lying on her face, the child born would be cross-eyed. So the verse was revealed, "Your wives are a tillage for you, so come to your tillage as you wish" [Baqarah 2:223], meaning he may approach her whether she is on her face or otherwise, so long as it is in the one passage.
قالت اليهود: إن الرجل إذا أتى امرأته وهي محبية، جاء ولده أحول، فنزلت {نساؤكم حرث لكم فأتوا حرثكم أنى شئتم} [البقرة: ٢٢٣] إن شاء مجبية وإن كان غير مجبية إذا كان في صمام واحد.
Muslim narrated it in the Book of Marriage (119:1435), and Ibn Hibban in his Sahih (4166), both from the hadith of Wahb bin Jareer, who said, "My father narrated to us, saying, 'I heard Numan bin Rashid narrating from Zuhri, from Muhammad bin Munkadir, from Jabir,'" and he mentioned it. The wording given is that of Ibn Hibban. As for Muslim, he did not mention the full wording of the hadith, but rather referred back to the preceding one and said, "And in the hadith of Numan from Zuhri there is an addition, 'whether prone or not prone, as long as it is in one opening.'"However, Ibn Hajar held the view that this addition is an insertion (mudraj), saying, "This addition appears to be from the tafsir of Zuhri, since it is absent from the narration of anyone else among the companions of Ibn Munkadir despite their large number." Fath al-Bari (8/192).His saying "mujbiyah" means lying face down, likened to the posture of sujud. His saying "one simam" means one opening, by which the front passage is meant.