Mishnayos Menachos Perek 9 Mishnah 9

There is an aspect of greater stringency with regard to placing hands than there is with regard to waving, and there is an aspect of greater stringency with regard to waving than there is with regard to placing hands. The stringency with regard to placing hands is that if several people are partners in bringing an offering, one of them waves the offering on behalf of all the other partners, but one cannot fulfill the requirement of placing hands if he alone places hands on behalf of all the other partners; rather, each member must place hands himself. The stringency with regard to waving is that waving is practiced in the cases of both offerings of an individual, e.g., peace offerings, where the breast and thigh and sacrificial portions are waved, and in the cases of communal offerings, e.g., the two lambs sacrificed on Shavuot, which are waved together with the two loaves; and it is practiced both in the cases of offerings when they are alive, e.g., the guilt offering of a leper and the lambs of Shavuot, and in the cases of offerings after they are slaughtered, e.g., the breast and thigh. By contrast, placing hands is practiced with a live animal. A further stringency is that waving is practiced both in the case of an item in which there is a living spirit, i.e., an animal offering, and in the case of an item in which there is not a living spirit, e.g., the omer offering, the sota meal offering, and the loaves accompanying a thanks offering and the ram of the nazirite, whereas placing hands is only ever performed upon living beings.

חֹמֶר בַּסְּמִיכָה מִבַּתְּנוּפָה וּבַתְּנוּפָה מִבַּסְּמִיכָה, שֶׁאֶחָד מֵנִיף לְכָל הַחֲבֵרִים וְאֵין אֶחָד סוֹמֵךְ לְכָל הַחֲבֵרִים. וְחֹמֶר בַּתְּנוּפָה, שֶׁהַתְּנוּפָה נוֹהֶגֶת בְּקָרְבְּנוֹת הַיָּחִיד וּבְקָרְבְּנוֹת הַצִּבּוּר, בַּחַיִּים וּבַשְּׁחוּטִין, בְּדָבָר שֶׁיֶּשׁ בּוֹ רוּחַ חַיִּים וּבְדָבָר שֶׁאֵין בּוֹ רוּחַ חַיִּים, מַה שֶּׁאֵין כֵּן בַּסְּמִיכָה: