Ezekiel 46:11
And in the feasts and in the solemnities the meat offering shall be an ephah to a bullock, and an ephah to a ram, and to the lambs as he is able to give, and an hin of oil to an ephah.
Cross-reference
Ezekiel 46:5 gives identical grain offering amounts for the Sabbath — the same formula applied to festivals here.
Ezekiel 46:7 prescribes the same grain offering amounts for the new moon, paralleling the festival instructions here.
In Leviticus 23:1-44, the appointed feasts and their grain offerings are instituted – the very regulations that Ezekiel 46:11 references for festival offerings.
Exodus 29:40 prescribes a smaller grain offering (tenth ephah) for the daily lamb; Ezekiel requires an ephah for festival bulls — same kind, different scale.
Numbers 15:9 prescribes three tenths of an ephah for a bull; Ezekiel requires a full ephah — same offering type but different quantities.
Numbers 15 prescribes grain offerings with animal sacrifices for the land; Ezekiel applies the same pattern to festival offerings.
Deuteronomy 16 provides festival regulations; Ezekiel specifies the grain offering amounts for those same festivals.