Parashas Acharei Mos · Passuk 17:07
Chabad.org — English translation + Rashi
Torah Temima points to Zevachim 106b.
English: Up to this point the Torah speaks of animals consecrated and offered while bamot were forbidden; from here it addresses animals consecrated while bamot were permitted but offered after they became forbidden.
Timeline of bamot prohibition
The verse distinguishes two historical stages and treats slaughter on a bamah after the ban as equivalent to slaughter “on the face of the field.”