Numbers 35:16

35:16 “But if he hits someone with an iron tool so that he dies, ¹  he is a murderer. The murderer must surely be put to death.

Numbers 35:31

35:31 Moreover, you must not accept a ransom for the life of a murderer who is guilty of death; he must surely be put to death.

[35:16]  ¹ tn the verb is the preterite of “die.” The sentence has :“if…he strikes him and he dies.” The vav (ו) consecutive is showing the natural result of the blow.