Narrated `Urwa bin Az-Zubair: (ra )
That he heard Marwan bin Al-Hakam and Al-Miswar bin Makhrama relating one of the events that happened to Allah’s Messenger (saws) in the `Umra of Al-Hudaibiya. They said, “When Allah’s Messenger (saws.) concluded the truce with Suhail bin `Amr on the day of Al-Hudaibiya, one of the conditions which Suhail bin `Amr stipulated, was his saying (to the Prophet( saws), “If anyone from us (i.e. infidels) ever comes to you, even if he has embraced your religion, you should return him to us, and should not interfere between us and him.” Suhail refused to conclude the truce with Allah’s Messenger (saws) except on this condition. The believers disliked this condition and got disgusted with it and argued about it. But when Suhail refused to conclude the truce with Allah’s Messenger (saws) except on that condition, Allah’s Apostle concluded it. Accordingly, Allah’s Messenger (saws) then returned Abu Jandal bin Suhail to his father, Suhail bin `Amr, and returned every man coming to him from them during that period even if he was a Muslim. The believing women Emigrants came (to Medina) and Um Kulthum, (ra ) the daughter of `Uqba bin Abi Mu’ait was one of those who came to Allah’s Messenger (saws) and she was an adult at that time. Her relatives came, asking Allah’s Messenger (saws) to return her to them, and in this connection, Allah revealed the Verses dealing with the believing (women).
Sahih al-Bukhari 4180, 4181
In-book : Book 64, Hadith 221