[שבט תשי"ז]
...במש"כ - מאז - בזח"ב (קז, ב) בפי' "כ"ש שאר ב"נ" - דקאי על ההכרח לעשות תשובה, ולא על הבטחון שימחל - אין בזה ענין של מיהב פתיחא דפומא "לחייביא", טענה דסיוע בפיהם. וק"ל. ועייג"כ ע"ז ה, רע"א.
האגרת היא אל מו"ה יהושע עלבוים, ונכתבו על גליון מכתבו מכ"ט טבת תשי"ז.
[Shevat 5717]
...Regarding what you wrote—since—in Zohar, volume II (107b), in the explanation of "all the rest of Bnei Noach"—that it refers to the necessity to do teshuvah, and not to the confidence that one will be forgiven—there is no issue here of "opening a door for sinners," an argument used as an excuse by some. This is clear and understood. See also there, He, note 271.
The letter is to Moreinu HaRav Yehoshua Alboim, and was written in the margin of his letter from the 29th of Teves, 5717.
Summary
This letter teaches that the Zohar emphasizes the obligation of teshuvah rather than guaranteeing forgiveness, and cautions against misinterpreting sources as excuses for sinning. Careful study and understanding are essential in matters of repentance.