האדם יודע מה נתכשל כל השנה מחשבות זרות בגופו בשעת תורה ותפלה, מי יתן והיה כלי נחושת, ומורק ושוטף (בפ' צו), אבל ח"ו כלי חרס אינו יוצא מדפיו (פסחים ד"ל וצריך שבירה, (תהלים נ"א) לב נשבר ונדכה אלהים לא תבזה: (כש"ט ח"ב דכ"ב ע"א)
Each person knows the foreign thoughts that cook in his heart the whole year during Torah study and prayer. If only the heart were a vessel of copper, [that requires] scrubbing and rinsing [to become pure].1Leviticus 6:21. For, unfortunately, an earthenware vessel does not release [its impurities] and must be broken.2Pesachim 30b. Metal vessels can be easily koshered of non-kosher foodstuffs they may have absorbed; ceramic vessels, however, cannot be koshered, and must be broken. “A broken and a contrite heart, O G‑d, You will not despise” (Psalms 51:19). Kesser Shem Tov, part 2, p. 22a
האדם יודע מה נתכשל כל השנה מחשבות זרות בגופו בשעת תורה ותפלה, מי יתן והיה כלי נחושת, ומורק ושוטף (בפ' צו), אבל ח"ו כלי חרס אינו יוצא מדפיו (פסחים ד"ל וצריך שבירה, (תהלים נ"א) לב נשבר ונדכה אלהים לא תבזה:
(כש"ט ח"ב דכ"ב ע"א)
Each person knows the foreign thoughts that cook in his heart the whole year during Torah study and prayer. If only the heart were a vessel of copper, [that requires] scrubbing and rinsing [to become pure].1Leviticus 6:21. For, unfortunately, an earthenware vessel does not release [its impurities] and must be broken.2Pesachim 30b. Metal vessels can be easily koshered of non-kosher foodstuffs they may have absorbed; ceramic vessels, however, cannot be koshered, and must be broken.
“A broken and a contrite heart, O G‑d, You will not despise” (Psalms 51:19).
Kesser Shem Tov, part 2, p. 22a