Quran 3:74 — The Amramites (Ali-'Imran)

He specifies His mercy for whomever He wills; GOD possesses unlimited grace.

[3:73] "And do not believe except as those who follow your religion." Say, "The true guidance is GOD's guidance." If they claim that they have the same guidance, or argue with you about your Lord, say, "All grace is in GOD's hand; He bestows it upon whomever He wills." GOD is Bounteous, Omniscient.

[3:75] Some followers of the scripture can be trusted with a whole lot, and they will give it back to you. Others among them cannot be trusted with a single dinar; they will not repay you unless you keep after them. That is because they say, "We do not have to be honest when dealing with the gentiles!"* Thus, they attribute lies to GOD, knowingly.