Judaism, Christianity, and Islam are connected as older and younger siblings. It's an asymmetrical relationship.
Abrahamic faiths
"The Qur'an is like a stream of divine consciousness. The literal meaning of the Qur'an is never the literal meaning of the Qur'an."
Neighboring Faiths, by David Nirenberg
Plenty of scholars have discussed interfaith relations in medieval Spain. What makes David Nirenberg's book distinctive is his emphasis on how each religion's self-image was shaped by its portrayal of the others.
One story, three ways
Robert Gregg traces five scriptural stories as they were later understood by commentators—Jewish, Christian, and Muslim.
Hagar’s story has often been read as if it explains some inevitable animosity among the Abrahamic faiths. We should try reading it differently.