From Sahih Muslim (Hadith 3630):
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
Reference: Muslim 3630