Umar came to the Messenger of Allah ﷺ and said, "Messenger of Allah, I am ruined."The Prophet ﷺ asked, "What has ruined you?"Umar replied, "I turned my saddle around last night."The Messenger of Allah ﷺ did not respond to him with anything. Then this verse was revealed to the Messenger of Allah ﷺ, "Your wives are a tilth for you, so come to your tilth however you wish" [Baqarah 2:223]. Approach from the front or from behind, but avoid the anus and menstruation.
حدثنا عبد بن حميد حدثنا الحسن بن موسى حدثنا يعقوب بن عبد الله الأشعري عن جعفر بن أبي المغيرة عن سعيد بن جبير
جاء عمر إلى رسول الله ﷺ فقال يا رسول الله هلكت قال وما أهلكك قال حولت رحلي الليلة قال فلم يرد عليه رسول الله ﷺ شيئا قال فأنزلت على رسول الله ﷺ هذه الآية {نساؤكم حرث لكم فأتوا حرثكم أنى شئتم} أقبل وأدبر واتق الدبر والحيضة
Muslim also reported it, in the chapters on mosques, the chapter on evidence for those who say that the middle prayer is the Asr prayer, hadith no. 629, from the hadith of Malik through this same chain, and it is found in the Muwatta, 1/138 (Yahya's version).There is also a version on this subject from Hafsa [Malik 1/139].