Numbers 26:11

ובני קרח לא מתו BUT THE SONS OF KORAH DID NOT DIE — They were in the plot originally, but at the moment when the rebellion broke out they had thoughts of repentance in their hearts; therefore a high spot was fenced round for them in Gehinnom and they stayed there (Sanhedrin 110a).

But the children of Qoraĥ died not.

וּבְנֵי־קֹ֖רַח לֹא־מֵֽתוּ׃ {ס}