Related for Chagigah 12:2

מי איכא מידי דמעיקרא לא בעי הפשט וניתוח ולבסוף בעי הפשט וניתוח

is it something which at first does not need to be flayed and cut, and in the end did need to be flayed and cut? [The regular sacrifices need these details when they are first commanded! So the continual burnt-offering must have been commanded first at the tent of meeting, and not before the Decalogue at Sinai, because it needs the details along with the general principles. The "appearing" sacrifice did not need these details and surely was given before the Decalogue.]

Tosefta Peah