This is a follow-up questions for this one and a similar (though not the same) to this one. Supposing the Injil/New Testament was changed, what was in it originally? I know there are some hints in Quran for this, and I'm interrested in other islamic sources (Hadith or prominent Muslim scholars) too, if they address this topic.
EDIT: I'm also interrested in what is in Bible and wasn't in Injil according to Islam. Some issues are well known (whether Jesus was God or just a prophet, crucifixion etc.), but I have few more subquestions, especially concerning morale. According to Quran and other Islamic sources, is it possible to assess whether these parts were (or could be) in Injil or not?
a) all food is clean:
Again Jesus called the crowd to him and said, “Listen to me, everyone, and understand this. Nothing outside a person can defile them by going into them. Rather, it is what comes out of a person that defiles them.” After he had left the crowd and entered the house, his disciples asked him about this parable. “Are you so dull?” he asked. “Don’t you see that nothing that enters a person from the outside can defile them? For it doesn’t go into their heart but into their stomach, and then out of the body.” (In saying this, Jesus declared all foods clean.) He went on: “What comes out of a person is what defiles them. For it is from within, out of a person’s heart, that evil thoughts come—sexual immorality, theft, murder, adultery, greed, malice, deceit, lewdness, envy, slander, arrogance and folly. All these evils come from inside and defile a person.”
b) connected - importance of love and purity of heart:
“You have heard that it was said to the people long ago, ‘You shall not murder, and anyone who murders will be subject to judgment.’ But I tell you that anyone who is angry with a brother or sister will be subject to judgment.
There are similar passages for other sins next to this one, ending with this:
“You have heard that it was said, ‘Love your neighbor and hate your enemy.’ But I tell you, love your enemies and pray for those who persecute you, that you may be children of your Father in heaven. He causes his sun to rise on the evil and the good, and sends rain on the righteous and the unrighteous. If you love those who love you, what reward will you get? Are not even the tax collectors doing that? And if you greet only your own people, what are you doing more than others? Do not even pagans do that? Be perfect, therefore, as your heavenly Father is perfect.