פירוש על בבא מציעא 42:11

"Elderly people who walk [with] a cane - Poor elderly men walk slowly with their canes, so they see each and every sheaf. And the expression, nemushot, is like [its usage], "shall not depart (yamushu)" (Isaiah 59:21) - since they feel and [then] they go.

The gleaners after the gleaners - The expression, nemushot, is like [its usage], "not feel (yamish)" (Exodus 13:22) - as they take and feel everything from in front of them.