Likutei Moharan 47:9/ליקוטי מוהר"ן מ״ז:ט׳

19 . And this is the meaning of “It is a land where you will not eat your bread in deprivation.” That is to say, “a land,” which is an aspect of truth. He is then in an aspect of an illuminated countenance and does not choose pleasures. Therefore “not in deprivation”—due to indigence and poverty—“will you eat your bread” but not other delicacies. Rather, it is because he is in the aspect of truth and detached from the desire for eating, and chooses to eat only bread.

2Therefore the Land of Israel is called “the land of the living.” For her bounty is from the attribute of Yaakov, of whom it is said: Our patriarch Yaakov never died (Taanit 5b). It is also an aspect of tefilin, which are called life. We see, then, that when someone embraces the Attribute of Truth, his livelihood is abundant. For the influx of bounty comes from the Attribute of Truth, as explained.

3This is the hint “Truth stands.” For our Sages expounded on the verse “all the subsistence at their feet”—this is a man’s money, which stands him on his feet. Thus: “Truth”—when someone who embraces the Attribute of Truth; “stands”—this is his money, which stands him on his feet, and his livelihood is abundant. But “falsehood does not stand,” for he is in [a state where] the countenance, the aspect of truth, is hidden.

4This is why whenever there is any misfortune, may none come, [the rabbis] decree a fast. Being that the Jewish people are suffering misfortune, they are in a state of a hidden countenance, the aspect of judgments. Therefore, they decree a fast, to break the desire for eating. So that then there will be the aspects of an illuminated countenance and a show of favor, which are aspects of mitigating and eliminating the judgments. As explained above: Will I then not favor them… when they are stringent with themselves…?