The prophet Muhammad is the founder of the religion of Islam and the primary author of the sacred scripture the Quran. There are approximately 1 billion Muslims (followers of Islam) in the world today.
Your question is too broad. There were rules for determining which books belonged in Sacred Scripture, there are rules as to how to interpret Sacred Scripture. There are rules as to how to nourish your life with Sacred Scripture. There are rules for the inclusion of Sacred Scripture in all of life, and rules for the reading of Sacred Scripture, which ones are you asking about?
Hebrew
The Bible, also known as Sacred Scripture.
Sacred Scripture and Sacred Tradition
The heart of the sacred scripture is in the Gospel.Because JESUS CHRIST the incarnate Word of GOD is the heart and fullness of God's Revelation.
The Sacred Scripture
Yes
Jews and Christians.
Tradition is all things having to do with a particular religion that are handed down from generation to generation. This would include written Scripture, creeds and other writings and teachings about the faith. So Scripture can be seen as part of the greater Tradition of faith.
The Word of God, (John 1.1)
Because it is the word of God.