Ezekiel 46:5

and the grain offering shall be one ephah for a ram, and the grain offering for the lambs, as much as he wants to give, as well as a hin of oil with every ephah.

Surrounding context

46:4 The burnt offering that the prince offers to the LORD on the Sabbath day shall be six lambs without blemish, and a ram without blemish;

46:5 and the grain offering shall be one ephah for a ram, and the grain offering for the lambs, as much as he wants to give, as well as a hin of oil with every ephah.

46:6 On the day of the New Moon it shall be a young bull without blemish, six lambs, and a ram; they shall be without blemish.

Translation and sources