Leviticus 23:5-11

⁵In the first month, on the fourteenth of the month, between the suns, is the Pascha before the Lord,

⁶and on the fifteenth day of this month is the feast (chagga) of unleavened cakes before the Lord; seven days you shall eat unleavened bread.

⁷In the first day you shall have a holy convocation; no laborious work shall you do;

⁸But you shall offer an oblation before the Lord seven days; in the seventh day there shall be a holy convocation; no laborious work may you do.

⁹And the Lord spake with Mosheb, saving:

¹⁰Speak with the sons of Israel, and say to them: When you have entered into the land that I will give unto you, and you reap its harvest, you shall bring an omera of the first of your harvest unto the priest,

¹¹And he shall uplift the omera before the Lord to be accepted for you: after the day of the festivity (yoma taba) shall the priest uplift it.