And they ask you about menstruation. Say, "It is harm, so keep away from wives during menstruation. And do not approach them until they are pure. And when they have purified themselves, then come to them from where Allah has ordained for you. Indeed, Allah loves those who are constantly repentant and loves those who purify themselves."  

وَيَسْأَلُونَكَ عَنِ الْمَحِيضِ ۖ قُلْ هُوَ أَذًى فَاعْتَزِلُوا النِّسَاءَ فِي الْمَحِيضِ ۖ وَلَا تَقْرَبُوهُنَّ حَتَّىٰ يَطْهُرْنَ ۖ فَإِذَا تَطَهَّرْنَ فَأْتُوهُنَّ مِنْ حَيْثُ أَمَرَكُمُ اللَّهُ ۚ إِنَّ اللَّهَ يُحِبُّ التَّوَّابِينَ وَيُحِبُّ الْمُتَطَهِّرِينَ  

[Machine] "Whoever has sexual intercourse with his wife from behind, then he is like his wife from among men. Then recite (And they ask you about menstruation) [Al-Baqarah 2:222]. Say, it is a harm, so keep away from women during menstruation and do not approach them until they are pure. And when they have purified themselves, then come to them from where Allah has commanded you. Indeed, Allah loves those who are constantly repentant and loves those who purify themselves. Then recite (Your wives are a place of sowing of seed for you, so come to your place of cultivation however you wish) [Al-Baqarah 2:223], standing, sitting, facing or from behind in the vagina."  

مَنْ أَتَى امْرَأَتَهُ فِي دُبُرِهَا فَهُوَ مِنَ الْمَرْأَةِ مِثْلُهُ مِنَ الرَّجُلِ ثُمَّ تَلَا {وَيَسْأَلُونَكَ عَنِ الْمَحِيضِ} [البقرة 222] قُلْ هُوَ أَذًى فَاعْتَزِلُوا النِّسَاءَ فِي الْمَحِيضِ وَلَا تَقْرَبُوهُنَّ حَتَّى يَطْهُرْنَ فَإِذَا تَطَهَّرْنَ فَأْتُوهُنَّ مِنْ حَيْثُ أَمَرَكُمُ اللَّهُ أَنْ تَعْتَزِلُوهُنَّ فِي الْمَحِيضِ الْفَرْجَ ثُمَّ تَلَا {نِسَاؤُكُمْ حَرْثٌ لَكُمْ فَأْتُوا حَرْثَكُمْ أَنَّى شِئْتُمْ} [البقرة 223] قَائِمَةً وَقَاعِدَةً وَمُقْبِلَةً وَمُدْبِرَةً فِي الْفَرْجِ  

[Machine] About Ibn Abbas's statement regarding the verse "Stay away from women during their menstrual periods," he says that it means to abstain from sexual intercourse with them. And do not approach them until they have purified themselves. When they have purified themselves from blood and purified themselves with water, then approach them as Allah has commanded you. He says regarding the private parts, do not go beyond that. Whoever does anything beyond that has transgressed.  

عَنِ ابْنِ عَبَّاسٍ فِي قَوْلِهِ تَعَالَى {اعْتَزِلُوا النِّسَاءَ فِي الْمَحِيضِ} يَقُولُ اعْتَزِلُوا نِكَاحَ فُرُوجِهِنَّ {وَلَا تَقْرَبُوهُنَّ حَتَّى يَطْهُرْنَ} [البقرة 222] يَقُولُ إِذَا تَطَهَّرْنَ مِنَ الدَّمِ وَتَطَهَّرْنَ بِالْمَاءِ {فَأْتُوهُنَّ مِنْ حَيْثُ أَمَرَكُمُ اللهُ} [البقرة 222] يَقُولُ فِي الْفَرْجِ وَلَا تَعَدَّوْا إِلَى غَيْرِهِ فَمَنْ فَعَلَ مِنْ ذَلِكَ شَيْئًا فَقَدِ اعْتَدَى