Sefer Chasidim Siman 542
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.
לא יוציא אדם מפיו דבר אלא אם כן יודע שרצון הבורא בדבר אז ותגזור אומר ויקם לך:
Medieval Jewish mysticism, translated by Sholom Alchanan Singer. Northbrook, Ill. Whitehall Co., 1971
A person should not utter anything from his mouth unless he knows that this is favorable to his Creator, and if this is so: "You will decide and this will be granted you" (Iyov 22:28)