Rashi on Numbers 15:25/רש"י על במדבר ט״ו:כ״ה

1הביאו את קרבנם אשה לה׳ [AND] THEY HAVE BROUGHT THEIR OFFERING, A FIRE OFFERING UNTO THE LORD — This is that offering mentioned previously in this chapter (v. 24), viz., the bullock for a burnt offering, since it says here, “a fire offering to the Lord” (which is a description of a burnt offering) (Sifrei Bamidbar 111:3).

2וחטאתם AND THEIR SIN OFFERING — This is the he-goat (mentioned in v. 24).