Ibn ‘Abbas said:God’s Messenger received the revelation, “Your wives are a tilth to you, so come to your tilth . . .” (Al-Qur’an 2:223) that means from in front or behind, but avoid the anus and intercourse during menstruation. Tirmidhi and Ibn Majah transmitted it.
Hadith Referenceمشكوة المصابيح / كتاب النكاح / 3191
Hadith Gradingالألبانی:حسن | زبیر علی زئی:صحيح
Hadith Takhrij´تحقيق و تخريج: محدث العصر حافظ زبير على زئي رحمه الله` «صحيح، رواه الترمذي (2980) و ابن ماجه (1925)»