Leviticus 23:16-17

16They must count 50 days until the day after the seventh Sabbath. Then they must give another gift of new grain to the Lord.

17Each family must bring two loaves of bread as a special gift to the Lord. They must make the bread with two tenths (2/10) of an ephah (about 4 litres) of good flour and yeast. This gift is from the first of their harvest fruits.