I think the conversation should start with whether Islam is Abrahamic religion ? For Jews, Hebrew Bible consisting of the Torah (the first five books). Abraham’s story unfolds in Genesis, the first book of the Torah. Abraham is referred to over and over again throughout the Hebrew Bible. For Christians, the Hebrew Bible is the Old Testament, the precursor of the New Testament that narrates the birth, ministry, death and Resurrection of Jesus Christ as well as the life and preaching of the earliest followers of Jesus. But when we come to Islam from the start the name Abraham changes to Ibrahim . I have never seen or heard someone name changes so it fits with your narrative. First of all, in the Qur’an, one finds no reference to the fact that God made a covenant with Abraham that would continue through the line of Ishaq (Isaac). Instead, the Qur’an if we seen in Qur’an 2:125-29: It says we made a covenant8 with [Ibrahim] and [Ismail]. This by it self shows Mohammed picked and chosen store's from the tora and bible put them randomly with out the actual historical facts for his purpose of acceptance by the people's of that time . If you need more facts about islam I will be more than happy to answer.