Midrash su Salmi 147:14

R. Juda said: "One should always be careful to have grain in his house; for quarrel comes often in a house about the lack of grain, as it is said (Ps. 147) He maketh thy borders peace; He giveth thee in plenty the fat of wheat." Said R. Papa: "This is what people say. When the barley is gone from the pitcher, strife knocks and enters the house." And R. Chanina b. Papa also said: "One should always be careful to have grain in his house, for Israel was called poor only because of grain, as it is said (Jud. 6, 3-6) And it was when Israel had sown, etc… . and another verse. And they encamped against them .... and again it is written. And Israel was greatly impoverished." R. Chelbu said: "One should always be careful to honor his wife, for the blessing in the house usually comes for the sake of the wife, as it is said (Gen. 12, 16) And he did well to Abram for her sake. And this is what Raba used to say to the inhabitants of his town, Machuza: 'Revere your wives, for the purpose of becoming rich.'"