In Parshas Tzav, many times occures this phrase: this is the Torah of the olah, this is the Torah of the minchah, etc. Also, in other parshiyos, and it is almost always doesn't match its superficial reading.
For example, just one week ago in Parshas Vayikra we already read about introducing the basic laws of all this concepts, korbanos.
Is there a mefaresh who has some kind of meta-rule for this repetitive phrase somewhere?