The Book of Marriage (Kitab Al-Nikah)
Muslim :: Book 8 : Hadith 3452
A hadith like this has been transmitted on the authority of Hisham with the same chain of narrators (and the words are): When Sauda became old (the rest of the hadith is the same) and in the narration of Sharik there is an addition (of these words:" She was the first woman whom he (Allah's Apostle) married after me."