Quran 3:157 — The Amramites (Ali-'Imran)

Whether you get killed or die in the cause of GOD, the forgiveness from GOD, and mercy are far better than anything they hoard.

[3:156] O you who believe, do not be like those who disbelieved and said of their kinsmen who traveled or mobilized for war, "Had they stayed with us, they would not have died or gotten killed." GOD renders this a source of grief in their hearts. GOD controls life and death. GOD is Seer of everything you do.

[3:158] Whether you die or get killed, you will be summoned before GOD.