We do not bring either from a fertilized field, or from an irrigated field, or from a field of trees; but if one brought, it is valid. How does one do it? He plows it the first year, and in the second he plants it seventy days prior to Passover, and it produces fine flour in abundance. How does one check it? The treasurer inserts his hand into it. [If] dust comes up in it, it is unfit until he sifts it. If it becomes wormy, it is unfit.