[Beedcardabeme]

Well I thought no human being can be sinless because Muhammad (PBUH) and Jesus (PBUH) prayed for forgiveness. When Muslims pray we normally make a Dua'a and pray for forgiveness and a place in heaven and to keep away from the Dajjal etc etc.

So that made me jump to the conlusion that prophet Muhammad (PBUH) made at least some sins because he prayed a lot more than just 5 times a day, and Isa (Jesus) PBUH also prayed like us Muslims pray.

But since Marco100 said "Mistakes and sin are not the same" this now makes me think that he was sinless (infallible) but made some mistakes which Allah did not like.
What I want to know is what were the mistakes he made?

Since you asked about in Christianity also, I wanted to provide an answer for you, and also to comment on praying for forgiveness. Please keep in mind that my answer is not representative of Christianity as a whole, as there are differing opinions on things.

In Islam, the prophets are all sinless. In Christianity they are not. Christianity only views Jesus as sinless. Christians do not believe that an individual needs to be free from sin to be a prophet, because we believe that God's anointing can be both given and taken away. God can impart his anointing for a purpose, or he can take it away. One reason for this is due to our free will. Many have been anointed and chosen by God before birth. Due to free will, they can lose God's anointing if they choose to turn away from God.

Islam believes the prophets do not sin, but they make mistakes. In Christianity, we believe they sin. I will give just one example. When Jonah disobeyed God and ran from God-- we view Jonah's actions as a sin.

With Jesus, Christians do not believe he sinned. Jesus is viewed as the ultimate example for a Christian. The very word "Christian" means a "follower of Christ." Just as Muslims follow the sunnah (life, behaviors, actions, words of the prophet Mohammed), Christians believe it is important to follow Jesus. When Jesus prayed to ask God for forgiveness, it was an example to us as his followers. Indeed, his followers directly asked Jesus to teach them how to pray. (One might wonder why the disciples would need Jesus to show them how to pray, when they were all Jews. Weren't they already praying as they should? As a disciple of Jesus, it was important to them to pray as he did and to do the things he did. He was the example. It was important for them to humble themselves to his instructions. ) Jesus' prayers for forgiveness were the example that we should follow when we pray.

I am sure that a Muslims would also say that the prophets asked for forgiveness, because they were humbling themselves before God and providing the example for us to follow. So, even if we may differ on views of sinlessness of the prophets, I am sure that we would probably agree on the reasons that a sinless person would ask forgiveness in prayer.

But a prayer for forgiveness goes beyond having a knowledge of ones sin. Take David, for example. David, in the Psalms, asked God to forgive him even of things that he may have done and not had knowledge of doing. We should ask forgiveness even for those things that we may have done and did not realize we did.

I wanted to address something else you said. You mentioned Mohammed praying more than 5 times a day and you stated that it led you to believe he must have sinned. The reason for prayer is not sin. Let me rephrase that-- there is no connection to the amount of sin one engages in and prayer. In fact, there might even be an inverse relationship-- the more one prays, the less sin in their life! (Or the more one sins, the less likely they are to pray. LOL) But sin has nothing to do with how much Mohamed, or anyone else, prays.

There is a story in Islam, and maybe if you have not read it then someone can find it for you, and it is about Mohamed talking to God and God telling him to pray 500 times a day. Mohammed says that if he prayed 500 times a day then he would not have time for anything else. So, God reduces it to five times and says that those five will be equal to the 500. (This is my summary of the story.) In my opinion, the point of the story is not about numbers. The point of the story is that we should "pray without ceasing" (as it says in the Bible). What God was showing Mohammed is that men should always be in an attitude of prayer before God. Our lives should be as a prayer to God, and we should be constantly in communion with him. To say that Mohammed must have had some sin, because he prayed so much, is a false conclusion and a misunderstanding of prayer.

Yes, asking forgiveness is a part of prayer, but it is not only what prayer is. I would wonder about the individual who only prays when he sins. In Christianity we call things like that "Fire Insurance" (and it is not a good term. LOL).

I would encourage you to stop worrying about who is sinless and who is not, and instead take some time to study about prayer-- the parts of prayer, purpose of prayer, etc.