申命記 16:9 註釋：Rashi, Ramban, Rashbam & Sforno

מהחל חרמש בקמה [BEGIN TO NUMBER SEVEN WEEKS] FROM THE TIME THOU BEGINNEST TO PUT THE SICKLE TO THE CORN — i.e. from when the “Omer” has been cut (from the sixteenth of Nisan) which is the first produce to be harvested (Leviticus 23:10) (cf. Sifrei Devarim 136:2-3; Menachot 71a).

FROM THE TIME THE SICKLE IS FIRST PUT TO THE STANDING CORN. The meaning thereof is “from the time you begin to put the sickle to the standing corn,” seeing that He has already mentioned when we are to begin to raise the sickle upon the standing corn in bringing the omer [a measure of the new barley brought as a meal-offering on the second day of Passover] which is the first-fruit of our harvest.³⁵⁷Leviticus 23:10. and the Midrash [of this verse] is:³⁵⁸Sifre, R’eih 316. “It teaches that the omer be reaped only with a sickle.”

מהחל חרמש, as per Onkelos, for the Omer is known as the beginning of the harvest season. (Leviticus 23,10)