Traditional Sunni and Shia Islamic marital jurisprudence allows Muslim men to be married to multiple women (a practice known as polygyny and polygamy)—up to four at any point in time.

What is the practice of polygamy?

Polygamy is a practice in which a person is married to more than one person at the same time, most commonly a man to several wives. Polygamy is often based on traditional cultural practices or religious beliefs. Constitutionally, polygamy raises important issues under the free exercise clause of the First Amendment.