Leviticus 11:27

11:27 All that walk on their paws among all the creatures that walk on all fours ¹  are unclean to you. Anyone who touches their carcass will be unclean until the evening,

Leviticus 11:47

11:47 to distinguish between the unclean and the clean, between the living creatures that may be eaten and the living creatures that must not be eaten.’”

Acts 10:14

10:14 But Peter said, “Certainly not, Lord, for I have never eaten anything defiled and ritually unclean!” ² 

[11:27]  ¹ tn Heb “the one walking on four.” Compare Lev 11:20-23.

[10:14]  ² tn Possibly there is a subtle distinction in meaning between κοινός (koinos) and ἀκάθαρτος (akaqarto") here, but according to L&N 53.39 it is difficult to determine precise differences in meaning based on existing contexts.