Leviticus 23:15-17

15‘And you shall count for yourselves from the day after the Sabbath, from the day that you brought the sheaf of the wave offering: seven Sabbaths shall be completed.

16Count fifty days to the day after the seventh Sabbath; then you shall offer a new grain offering to the Lord.

17You shall bring from your dwellings two wave loaves of two-tenths of an ephah. They shall be of fine flour; they shall be baked with leaven. They are the firstfruits to the Lord.