Jamieson, Fausset and Brown on Ruth 2:16

16. let fall also some of the handfuls of purpose for her--The gleaners in the East glean with much success; for a great quantity of corn is scattered in the reaping, as well as in their manner of carrying it. One may judge, then, of the large quantity which Ruth would gather in consequence of the liberal orders given to the servants. These extraordinary marks of favor were not only given from a kindly disposition, but from regard to her good character and devoted attachment to her venerable relative.