Rashi on Numbers 18:32/רש"י על במדבר י״ח:ל״ב

1ולא תשאו עליו חטא וגו׳ AND YE SHALL BEAR NO SIN BY REASON OF IT etc. — This implies: consequently if you do not set it aside you will bear sin on that account.

2ולא תמותו LEST YE DIE — consequently if you do profane them you will die (Bekhorot 26b; cf. Rashi on Exodus 30:20 and Note thereon).