Sichot HaRan Chapter 9
Can copy this into an AI, or connect the whole library to your assistant. For deeper learning, you can directly use the original seforim, sites, and apps.
בְּשֵׁם הַבַּעַל־שֵׁם־טוֹב ז"ל: שֶׁסַּכִּין אֵין נוֹתְנִין בְּמַתָּנָה. הַיְנוּ שֶׁאֶחָד לֹא יִתֵּן לַחֲבֵרוֹ סַכִּין בְּמַתָּנָה.
Rabbi Nachman's Wisdom, trans. Aryeh Kaplan, Jerusalem. Breslov Research Institute, 1973
In the name of the Baal Shem Tov: “A knife should not be given as a gift.”