Beliefs shared by Islam with Judaism and Christianity  include:
    Belief in a single, omnipotent God
    Observance of a weekly Sabbath
    Importance of prayer
    Importance of giving alms and being good toone's neighbors
    Ritual fasting
    Belief in the sacred character of the Hebrew Bible and the New Testament
    Belief in heaven, hell, Satan, and angels

Beliefs shared by Islam with Judaism (but not with Christianity) include:
    Male circumcision
    Dietary restrictions (ritual slaughter of meat-animals; prohibition against eating pork)

Beliefs distinctive to Islam (not shared with either Judaism or Christianity) include:
    Belief that Muhammed was the messenger (or prophet) of God
    Belief that the Qur'an (or Koran) is the word of God
    Acceptance of polygamy (men may have up to four wives)
    Prohibition against drinking alcohol