I know for sure about Jesus Christ saying:
Anyone who is Christian and acts contrary to these teachings of Christ is unworthy of being a disciple of Christ, for our God is the God of love, mercy, and charity.
I am afraid, though, that the followers of other religions can still do things that are contrary to love and still claim to be doing God’s will according to their doctrine and scriptures.
Down to the specifics: no doubt that there is only one God. However, it is how we describe and know Him that makes the difference. The God that we knew in the Old Testament did not necessarily seem to love all the people. There are nowadays quite a few who for some reason love to collect those strange quotes.
As for the teachings of Islam I am very ignorant on the topic, but I have also found others who collect similar quotes:
As my Lord has taught me, I neither judge nor condemn. I also know that God teaches all people to love. But I am afraid that the God they describe appears very different from the God that was fully revealed through Christ, the God of mercy and forgiveness, that did not come to condemn sinners but to save them at the cost of sacrificing his own life and who said of sinners and disbelievers: “forgive them, Father, for they do not know what they are doing”
I do not know of any other God that has spoken this way to his people, and I am eager to find out more.