Sahih al-Bukhari 4526
Sahih al-Bukhari · Book 65: Prophetic Commentary on the Qur'an (Tafseer of the Prophet (pbuh)) · "Your wives are a tilth for you; so go to your tilth (have sexual relations with your wives in any manner as long as it is in the vagina and not in the anus) when or how you will..." (V.2:223)
Narrated Nafi`:
حَدَّثَنَا إِسْحَاقُ ، أَخْبَرَنَا النَّضْرُ بْنُ شُمَيْلٍ ، أَخْبَرَنَا ابْنُ عَوْنٍ ، عَنْ نَافِعٍ ، قَالَ كَانَ ابْنُ عُمَرَ ـ رضى الله عنهما ـ إِذَا قَرَأَ الْقُرْآنَ لَمْ يَتَكَلَّمْ حَتَّى يَفْرُغَ مِنْهُ، فَأَخَذْتُ عَلَيْهِ يَوْمًا، فَقَرَأَ سُورَةَ الْبَقَرَةِ حَتَّى انْتَهَى إِلَى مَكَانٍ قَالَ تَدْرِي فِيمَا أُنْزِلَتْ. قُلْتُ لاَ. قَالَ أُنْزِلَتْ فِي كَذَا وَكَذَا. ثُمَّ مَضَى . وَعَنْ عَبْدِ الصَّمَدِ ، حَدَّثَنِي أَبِي ، حَدَّثَنِي أَيُّوبُ ، عَنْ نَافِعٍ ، عَنِ ابْنِ عُمَرَ ، {فَأْتُوا حَرْثَكُمْ أَنَّى شِئْتُمْ} قَالَ يَأْتِيهَا فِي. رَوَاهُ مُحَمَّدُ بْنُ يَحْيَى بْنِ سَعِيدٍ عَنْ أَبِيهِ عَنْ عُبَيْدِ اللَّهِ عَنْ نَافِعٍ عَنِ ابْنِ عُمَرَ .
Whenever Ibn `Umar recited the Qur'an, he would not speak to anyone till he had finished his recitation. Once I held the Qur'an and he recited Surat-al-Baqara from his memory and then stopped at a certain Verse and said, "Do you know in what connection this Verse was revealed? " I replied, "No." He said, "It was revealed in such-and-such connection." Ibn `Umar then resumed his recitation. Nafi` added regarding the Verse:--"So go to your tilth when or how you will" Ibn `Umar said, "It means one should approach his wife in .."