Musar for Yoma 76:1
ומשלך יתנו לך אין אדם נוגע במוכן לחבירו ואין מלכות נוגעת בחברתה אפי' כמלא נימא
and from what belongs<span class="x" onmousemove="('comment',' What is predestined as your lawful source of income.');"><sup>1</sup></span> to you will you be given. No man can touch what is prepared for his fellow and 'One kingdom does not interfere with the other<span class="x" onmousemove="('comment',' In either time or place.');"><sup>2</sup></span>
Mesilat Yesharim
But if they would know and understand that "no man can touch what is designated for his fellow even a hair's breadth" (Yoma 38b), and that everything is from G-d according to His wondrous judgment and unfathomable wisdom, they would have no reason whatsoever to feel pained by the good fortune of their neighbors.
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Mesilat Yesharim
However, that which can protect a person and save him from these detriments is trust in G-d. Namely, that a person casts his burden entirely upon G-d, knowing that it is certainly impossible for a man to lack what was designated for him, as our sages taught: "all of a person's sustenance [for the year] is fixed for him from Rosh Hashana [to Yom Kippur]" (Beitzah 16a). Likewise, they said: "no man can touch what was prepared for his fellow even to the extent of a hair's breadth" (Yomah 38b).
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