Is there a debate?
The two are not mutually compatible when debating Sharia Law and Mosaic Law.
Jesus upheld the Mosaic Law he also summed the Whole of the Mosaic Law and teachings of the Prophets into two commandments:-
1. Love God with all your heart , mind, body, soul and strength.
2. Love your neighbour as you love yourself.
The Mosaic Law is the founder of the covenant with the descendants of Abraham and Isaac. The Son of the Covenant with Abraham and the Covenant of the Messiah the Christ bringing Jews and Gentiles together.
The Sharia Law has no place in the world as under the rule of Yahweh. It is Jew or Gentile, if not a Jew whether a Christian Jew added into the branches then as far as religion is concerned there is no place for the rest. If Christ is the Son of God the last covenant has already been established as the Kingdom of God.
King James Bible
Then he answered and spake unto me, saying, This is the word of the LORD unto Zerubbabel, saying, Not by might, nor by power, but by my spirit, saith the LORD of hosts.
Given that God has made it plain and showed by Christ and the OT Prophets that it is by the Spirit and not the Law that people belong to him and live. How will you debate the ethics of truth used by Christ when he taught:-
21 Jesus saith unto her, Woman, believe me, the hour cometh, when ye shall neither in this mountain, nor yet at Jerusalem, worship the Father.
22 Ye worship ye know not what: we know what we worship: for salvation is of the Jews.
23 But the hour cometh, and now is, when the true worshippers shall worship the Father in spirit and in truth: for the Father seeketh such to worship him.
24 God is a Spirit: and they that worship him must worship him in spirit and in truth. King David was baptised with the Holy Spirit. The disciples were the same.
Law is about doing the right thing. Spirit and truth is about the way of living it. Can we really debate outside the definition of the Laws in all cases?