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 the English translation of the book, "The Wives of the Messenger of Allah" by Muhammad Swaleh Awadh, it states that she was married to Muhammad in Dhul Qa'adah, in the fifth year of Hijra. Since Zaynab was the wife of Muhammad's adopted son, pre-Islamic practices frowned upon such her marriage with the prophet. Arab society would have viewed this union as profoundly wrong; because they considered an adopted son was truly a "son", for a man to marry his adopted son's wife—even if she was divorced—was considered wrong.