פירוש על שבת 45:11

At the end of his field: At the end of his harvest. As it is written, "you shall not finish" - it is implied [that it must be] at the time of finishing, and not that he should put it aside before then.

Due to causing the poor to be idle: And it explains all of [the reasons].

A time [it is] is unoccupied: When the poor are not with him; and he will say to his poor relative, "Hurry and take [from] here before others come." But now that he leaves it to the end of the field's harvest, the poor see and come.