a search from the internet:
http://www.quran.net/comp-std/pork.htm
In the book of Leviticus, chapter 11, v. 7, it is recorded that
God declares the pig to be unclean for believers. Then, in verse 8,
God says: “You must not eat their meat or touch their carcasses;
they are unclean for you”. This command is repeated in Deuteronomy
14:7-8. Then, in Isaiah 65:2-4, and 66:17, God issues a stern
warning against those who eat pork.
Some people are aware of this prohibition from God, but they say
that they can eat pork because St. Paul said that all food is clean
in his letter to the Romans 14:20. St. Paul said this because he
believed (as he wrote in his letter to the Ephesians 2:14-15) that
Jesus had abolished the Law with all its commandments and
regulations. He seems, however, to have misunderstood what he heard
about Jesus. In the Gospel According to Matthew 5:17-20, Jesus is
reported to have said quite the contrary, as follows: “Do not think
that I have come to abolish the Law . . . ." Jesus then went on in
that passage (in verse 19) to denounce anyone who would break the
smallest commandment and teach others likewise. He also praised his
true followers who will practice and teach even the smallest
commandment. One of the commandments, as we have seen, is to stay
away from pork.
This is why the true followers of Jesus, holding on to his
teachings, did not let unclean food such as pork enter their
mouths, so that Peter, the chief disciple, can say, “I have never
eaten anything impure or unclean” (Acts of the Apostles, ch. 10, v.
14)
Five chapters later in the Acts of the Apostles, 15:29, we find
that the original disciples still differentiate between clean and
unclean foods, and this time Paul is in agreement with them. Six
chapters later, in ch. 21, v. 25, their decision to impose food
regulations on believers is mentioned without regret, and this time
Paul is challenged to prove that he is in agreement with them; and
he demonstrated his full agreement with them.
What remains, then, is that Jesus, on whom be peace, upheld the
prohibition against pork. His disciples also upheld it, and so must
all his followers. Those who fail to uphold it need to be informed
and reminded of this rule from God. This is one reason why God sent
His final messenger, on whom be peace. God says:
“O people of the Scripture ! Now has Our Messenger come unto
you, expounding unto you much of that which you used to hide in the
Scripture, and forgiving much. Now has come unto you light from
Allah and a plain Scripture.” (The Meaning of the Glorious Qur’an
5:15)