As he shall be able to give— With respect to the lambs, no particular quantity of oil or flour is prescribed; he was to give "according to his ability and devotion." The same expression is used in the 7th and 11th verses.
Related Commentaries of Ezekiel 46:5
Ezekiel 46:5
5 And the meat offering shall be an ephah for a ram, and the meat offering for the lambs as he shall be able to give, and an hin of oil to an ephah.