Reference for Keritot 48:25

ר"א דאמרו לו הוא דתנן

There is, however, a contradiction between two statements relating to the unconditional guilt-offering itself; for here we learn: IT SHALL BE BURIED, whilst the concluding clause reads: THE FLESH IS REMOVED TO THE PLACE OF BURNING! - This is doubtlessly a contradiction; he who taught the one clause cannot have taught the other.

Jastrow