Contradiction with Exodus 23:19
This verse emphasizes not keeping the harvest for oneself, while Ruth 2:19 speaks about gathering and keeping it.
Exodus 23:19: The first of the firstfruits of thy land thou shalt bring into the house of the LORD thy God. Thou shalt not seethe a kid in his mother's milk.
Contradiction with Proverbs 28:19
This verse warns against following vain pursuits and emphasizes hard work, which contrasts with Ruth 2:19 where Ruth receives generous provision without direct labor for it.
Proverbs 28:19: He that tilleth his land shall have plenty of bread: but he that followeth after vain [persons] shall have poverty enough.