Chapter THE SIXTH: Ali's Marriage.--The Prophet's Marriage

with Hafsah and Ummu'l Masakin.--The Battle of Uhud.--The Marriage of Mohammad and Zainab.--The Ghazwah, or Expedition of Zat-ir-Riqua.--The Ghazwah, or Expedition of the Banu Mustaliq.--The Tayammum, or the Ceremony of Ablution performed with Sand.--The Battle of the Ditch.--The Treaty of Al-Hudaibiyah.