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.
Muhammad
Modern religious and secular criticism of Islam has concerned Muhammad's sincerity in claiming to be a prophet, his morality, his ownership of slaves, his treatment of enemies, his marriages, his treatment of doctrinal matters, and his psychological condition. Muhammad has been accused of sadism and mercilessness—including the invasion of the Banu Qurayza tribe in Medina—sexual relationships with slaves, and his marriage to Aisha when she was six years old, which according to most estimates was consummated when she was nine.