2 verses have
gnat
in Edition Clear Qur'an by Talal Itani / Al-Baqara (The Cow)

2:26God does not shy away from making an example of a gnat, or something above it. As for those who believe, they know that it is the Truth from their Lord. But as for those who disbelieve, they say, “What did God intend by this example?” He leads astray many thereby, and He guides many thereby; but He misleads thereby only the evildoers.

2:203And remember God during the designated days. But whoever hurries on in two days commits no wrong, and whoever stays on commits no wrong—provided he maintains righteousness. And obey God, and know that to Him you will be gathered.