2:223 of the Qur'an authorises a man to sodomise a woman, according to its oldest authoritative Islamic sources.6:60:50 Sahih Bukhari
Narrated Nafi': 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 .."6:60:51 Sahih Bukhari
Narrated Jabir: Jews used to say: "If one has sexual intercourse with his wife from the back, then she will deliver a squint-eyed child." So this Verse was revealed:-- "Your wives are a tilth unto you; so go to your tilth when or how you will." (2.223)
Note how the hadith by Jabir was fully translated. Note how the hadith above Jabir, by Ibn Umar, was not fully translated. Why? It is clear that Jabir's hadith has nothing to do with Ibn Umar, since this is the case. Sunan Abu Dawud is a later and weaker source than Sahih Al-Bukhari. The 30 volumes of Tafsīr al-Ṭabarī has the greatest authority of all tafsīrs in Sunni Islam, because the likes of Ibn Kathir used it for his own tafsīr. Ibn Kathir's tafsīr is perceived as a summary of Tafsīr al-Ṭabarī, but that's not completely accurate. Have all 30 volumes of Tafsīr al-Ṭabarī been translated into english?
--------------------------- 11:2159 Sunan Abu Dawud
Narrated Abdullah Ibn Abbas: Ibn Umar misunderstood (the Qur'anic verse, "So come to your tilth however you will")--may Allah forgive him. The fact is that this clan of the Ansar, who were idolaters, lived in the company of the Jews who were the people of the Book. They (the Ansar) accepted their superiority over themselves in respect of knowledge, and they followed most of their actions. The people of the Book (i.e. the Jews) used to have intercourse with their women on one side alone (i.e. lying on their backs). This was the most concealing position for (the vagina of) the women. This clan of the Ansar adopted this practice from them. But this tribe of the Quraysh used to uncover their women completely, and seek pleasure with them from in front and behind and laying them on their backs. When the muhajirun (the immigrants) came to Medina, a man married a woman of the Ansar. He began to do the same kind of action with her, but she disliked it, and said to him: We were approached on one side (i.e. lying on the back); do it so, otherwise keep away from me. This matter of theirs spread widely, and it reached the Apostle of Allah (peace_be_upon_him). So Allah, the Exalted, sent down the Qur'anic verse: "Your wives are a tilth to you, so come to your tilth however you will," i.e. from in front, from behind or lying on the back. But this verse meant the place of the delivery of the child, i.e. the vagina.
What did Ibn Umar supposedly misunderstand? Since this hadith has clarified that 2:223 authorises a Muslim man to have sex with a woman from any position but it must be in the vagina, process of elimination leads us to conclude that 2:223 authorises a Muslim man to sodomise a woman, based on its oldest sources. There is no hadith in Sahih Bukhari forbidding anal sex. All the hadiths refuting 6:60:50 comes from later sources. The Pakistani printed edition of Sahih Al-Bukhari fills in the blanks of 6:60:50 with "Fi Dubur". Tafsīr al-Ṭabarī hadith number 3468 also confirms what 2:23 was about, and agrees with Ibn Umar.
I cannot decide if I prefer the more-obvious interpretation of 2:223 in Sunni Islam, or the less-obvious-but-more-correct interpretation I have just pointed out