Numbers 35:23

21 Or in enmity smite him with his hand, that he die: he that smote him shall surely be put to death; for he is a murderer: the revenger of blood shall slay the murderer, when he meeteth him.

22 But if he thrust him suddenly without enmity, or have cast upon him any thing without laying of wait,

Or with any stone, wherewith a man may die, seeing him not, and cast it upon him, that he die, and was not his enemy, neither sought his harm:

24 Then the congregation shall judge between the slayer and the revenger of blood according to these judgments:

25 And the congregation shall deliver the slayer out of the hand of the revenger of blood, and the congregation shall restore him to the city of his refuge, whither he was fled: and he shall abide in it unto the death of the high priest, which was anointed with the holy oil.

This was said to Israel at a particular time, so it is wise to read it together with the surrounding text. Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB
or without looking drops a heavy stone that kills him, but he was not an enemy and did not intend to harm him,
KJV
Or with any stone, wherewith a man may die, seeing him not, and cast it upon him, that he die, and was not his enemy, neither sought his harm:
WEB
or with any stone, by which a man may die, not seeing him, and cast it on him so that he died, and he was not his enemy and not seeking his harm,
ASV
or with any stone, whereby a man may die, seeing him not, and cast it upon him, so that he died, and he was not his enemy, neither sought his harm;
DARBY
or [have smitten him] with any stone wherewith one may die, without seeing him, and have cast it upon him so that he die, and he was not his enemy, neither sought his harm:
BLB
or with any stone with which a man could die by it, without seeing [him], and throwing [it] at him so that he dies, and he [is] not an enemy to him or seeking his harm,
ÅB
eller uten å se ham rammer ham med en stein stor nok til å drepe en med, så han dør, men drapsmannen ikke er hans fiende og ikke vil ham noe ondt,
OTB
eller, uten å se dem, slipper en stein tung nok til å forårsake død, og personen dør, men det var ingen fiendskap og ingen skade ment,
B1930
eller uten å se ham rammer ham med en sten stor nok til å drepe en med, så han dør, men drapsmannen ikke er hans fiende og ikke vil ham noget ondt,

Study notes (Tyndale)

Original text and word study