Contradiction with Genesis 23:18
This verse explains that the field was purchased by Abraham, whereas Genesis 25:10 suggests it was a burial place purchased by both Abraham and Ephron.
Genesis 23:18: Unto Abraham for a possession in the presence of the children of Heth, before all that went in at the gate of his city.
Contradiction with Acts 7:15-16
This passage claims that Abraham bought the sepulchre in Shechem, contrasting with Genesis 25:10 which cites the cave of Machpelah in Hebron as the burial site.
Acts 7:15-16: So Jacob went down into Egypt, and died, he, and our fathers,