Muhammad
Muhammad's life is traditionally defined into two periods: pre-hijra (emigration) in Mecca (from 570 to 622), and post-hijra in Medina (from 622 until 632). Muhammad is said to have had thirteen wives in total (although two have ambiguous accounts, Rayhana bint Zayd and Maria al-Qibtiyya, as wife or concubine.) Eleven of the thirteen marriages occurred after the migration to Medina.
Criticism of Muhammad
According to one account, after the last fort of the Jewish settlement called Khaybar was taken by Muhammad and his men, the chief of the Jews, called Kinana ibn al-Rabi, was asked by Muhammad to reveal the location of some hidden treasure. When he refused, Muhammad ordered a man to torture Kinana, and the man "kindled a fire with flint and steel on his chest until he was nearly dead." Kinana was then beheaded, and Muhammad took his young wife Safiyya as a concubine.