Sayyiduna Abu Sa'id al-Khudri (may Allah be pleased with him) narrates: In the blessed time of the Prophet (peace and blessings be upon him), a man had intercourse with his wife after turning her over, and the people said: So-and-so had intercourse with his wife after turning her over. So Allah Almighty revealed this verse: "Your wives are a tilth for you, so come to your tilth however you wish."
Abu Ya'la recorded it from his shaykh al-Harith bin Surayj al-Baqqal, who is da'if (weak) and a liar.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب التفسير / 10861