Ibn Maslamah and Ibn 'Isa reported from Muhammad b. al-Munkadir on the authority of Jabir.

The Prophet sent some cavalry towards Najd and they brought a man from the tribe of Banu Hanifa who was called Thumama bin Uthal. They fastened him to one of the pillars of the Mosque. The Prophet went to him and said, "What have you got, O Thumama?" He replied," I have got a good thought, O Muhammad! If you should kill me, you would kill a person who has already killed somebody, and if you should set me free, you would do a favor to one who is grateful, and if you want property, then ask me whatever wealth you want." He was left till the next day when the Prophet said to him, "What have you got, Thumama? He said, "What I told you, i.e. if you set me free, you would do a favor to one who is grateful." The Prophet left him till the day after, when he said, "What have you got, O Thumama?" He said, "I have got what I told you. "On that the Prophet said, "Release Thumama." So he (i.e. Thumama) went to a garden of date-palm trees near to the Mosque, took a bath and then entered the Mosque and said, "I testify that None has the right to be worshipped except Allah, and also testify that Muhammad is His Apostle! By Allah, O Muhammad! There was no face on the surface of the earth most disliked by me than yours, but now your face has become the most beloved face to me. By Allah, there was no religion most disliked by me than yours, but now it is the most beloved religion to me. By Allah, there was no town most disliked by me than your town, but now it is the most beloved town to me. Your cavalry arrested me (at the time) when I was intending to perform the `Umra. And now what do you think?" The Prophet gave him good tidings (congratulated him) and ordered him to perform the `Umra. So when he came to Mecca, someone said to him, "You have become a Sabian?" Thumama replied, "No! By Allah, I have embraced Islam with Muhammad, Apostle of Allah. No, by Allah! Not a single grain of wheat will come to you from Yamamah unless the Prophet gives his permission."

Abu Bakr As-Siddiq sent for me when the people of Yamama had been killed (i.e., a number of the Prophet's Companions who fought against Musailima). (I went to him) and found `Umar bin Al- Khattab sitting with him. Abu Bakr then said (to me), "`Umar has come to me and said: "Casualties were heavy among the Qurra' of the Qur'an (i.e. those who knew the Qur'an by heart) on the day of the Battle of Yamama, and I am afraid that more heavy casualties may take place among the Qurra' on other battlefields, whereby a large part of the Qur'an may be lost. Therefore I suggest, you (Abu Bakr) order that the Qur'an be collected." I said to `Umar, "How can you do something which Allah's Apostle did not do?" `Umar said, "By Allah, that is a good project." `Umar kept on urging me to accept his proposal till Allah opened my chest for it and I began to realize the good in the idea which `Umar had realized." Then Abu Bakr said (to me). 'You are a wise young man and we do not have any suspicion about you, and you used to write the Divine Inspiration for Allah's Apostle. So you should search for (the fragmentary scripts of) the Qur'an and collect it in one book." By Allah If they had ordered me to shift one of the mountains, it would not have been heavier for me than this ordering me to collect the Qur'an. Then I said to Abu Bakr, "How will you do something which Allah's Apostle did not do?" Abu Bakr replied, "By Allah, it is a good project." Abu Bakr kept on urging me to accept his idea until Allah opened my chest for what He had opened the chests of Abu Bakr and `Umar. So I started looking for the Qur'an and collecting it from (what was written on) palme stalks, thin white stones and also from the men who knew it by heart, till I found the last Verse of Surat at-Tauba (Repentance) with Abi Khuzaima Al-Ansari, and I did not find it with anybody other than him. The Verse is: 'Verily there has come unto you an Apostle (Muhammad) from amongst yourselves. It grieves him that you should receive any injury or difficulty..(till the end of Surat-Baraa' (at-Tauba) (9.128-129). Then the complete manuscripts (copy) of the Qur'an remained with Abu Bakr till he died, then with `Umar till the end of his life, and then with Hafsa, the daughter of `Umar.

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 Messenger of Allah (saws).

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.