From Sahih Muslim (Hadith 3714):
Abu Bakr b. Abu'l-Jahm reported:I and Abu Salama b 'Abd al-Rahman came to fatima bint Qais (Al! ah be pleased with her) and asked her (about divorce, etc.). She said: I was the wife of Abu 'Amr b. Hafs b. al-Mughira, and he set out to join the battle of Najran. The rest of the hadith is the same, but he made this addition:" She said: I married him and Allah hornoured me on account of Ibn Zaid and Allah favoured me because of him
Reference: Muslim 3714