Midrasch zu Wajikra 7:37

3) (Vayikra 7:37): "This is the law of the burnt-offering, of the meal-offering, and of the sin-offering, and of the guilt-offering, and of the miluim (the offering of investiture of the priesthood), and of the sacrifice of the peace-offerings.": Just as the general rule and the particulars of the miluim were given at Sinai (before the tabernacle was set up, viz. Shemoth, Tetzaveh,), so, the general rules and particulars of all of them (those mentioned in the verse) were given at Sinai.

4) But perhaps, just as the miluim is a communal offering (peace-offerings), so we should derive that only (the general rules and particulars of) communal offerings (were given at Sinai). Whence do I derive the same for an individual offering? From "and of the guilt-offering." But perhaps just as the guilt-offering is an individual offering, so I can derive from it only an individual offering. Whence would I derive the same for communal offerings? From "and of the miluim" (itself)! When you reflect upon this, you can say: "of the burnt-offering": both individual and communal; "of the meal-offering": both individual and communal; "and of the sin-offering": both individual and communal; "and of the sacrifices of the peace-offerings": both individual and communal.

Rabbi Pinchas, Rabbi Levi and Rabbi Yochanan [said] in the name of Rabbi Menachem from Gallia: In the time to come, all sacrifices will be annulled - but the sacrifice of thanksgiving will not be annulled. All prayers will be annulled, but the prayer of gratitude will not be annulled. This accords with what is written [Jeremiah 33:11]: "The voice of joy and the voice of gladness, the voice of the groom and the voice of the bride, the voice of those who say 'Give thanks to the LORD of hosts' etc." - this is the prayer of gratitude. "Those who bring [the sacrifice of] thanksgiving to the House of the LORD": this is the sacrifice of thanksgiving. Thus David said: "I owe You vows and will offer you thanksgivings" [Psalms 56:13] - not "thanksgiving," but "thanksgivings," [indicating both] the thanksgiving prayer and the prayer of gratitude.