Deuteronomy 14:19

14:19 and any winged thing on the ground are impure to you – they may not be eaten.

Deuteronomy 23:9

Purity in Personal Hygiene

23:9 When you go out as an army against your enemies, guard yourselves against anything impure.

Deuteronomy 14:10

14:10 but whatever does not have fins and scales you may not eat; it is ritually impure to you.