Types of woman not to marry in Islam: A woman who is in `Iddah (waiting period). A woman who has committed fornication or adultery until she repents and completes her `Iddah. A woman whom you have divorced three times until she has been married to another man in a valid marriage. A woman who is in Ihram (a state in which one is prohibited to practice certain deeds that are lawful at other times). Two sisters at the same time. A woman and her maternal or paternal aunt at the same time. More than four women at one time.