Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
bayhaqi:14109Abū ʿAbdullāh Muḥammad b. ʿAbdullāh al-Ḥāfiẓ > Abū al-ʿAbbās Muḥammad b. Yaʿqūb > Abū ʿAlī al-Ḥasan b. Mukram > ʿUthmān b. ʿUmar > Ibn Jurayj > ʿAṭāʾ > Ibn

[Machine] In His saying, Almighty Allah says, "{Your women are a tilth for you, so go to your tilth when and how you will}" [Surah Al-Baqarah 2:223]. Abu Hurairah narrated that Abdullah bin Amr bin Al-As (May Allah be pleased with him) said: "The Prophet ﷺ said:

'Sex is permissible only in one of two places, namely the vagina and the anus.'

[Muslim]. In another narration it is added: 'So long as the semen is discharged by the husband in the womb and it has not been transmitted through a third orifice.'"

[Al-Bukhari and Muslim].  

البيهقي:١٤١٠٩وَأَخْبَرَنَا أَبُو عَبْدِ اللهِ مُحَمَّدُ بْنُ عَبْدِ اللهِ الْحَافِظُ ثنا أَبُو الْعَبَّاسِ مُحَمَّدُ بْنُ يَعْقُوبَ ثنا أَبُو عَلِيٍّ الْحَسَنُ بْنُ مُكْرَمٍ ثنا عُثْمَانُ بْنُ عُمَرَ أنبأ ابْنُ جُرَيْجٍ عَنْ عَطَاءٍ عَنِ ابْنِ عَبَّاسٍ ؓ

فِي قَوْلِهِ تَعَالَى {نِسَاؤُكُمْ حَرْثٌ لَكُمْ فَأْتُوا حَرْثَكُمْ أَنَّى شِئْتُمْ} [البقرة 223] قَالَ تُؤْتَى مُقْبِلَةً وَمُدْبِرَةً فِي الْفَرْجِ