Bava Metzia 54B

שמע מינה חומשו כמותו. שמע מינה.

Learn from it that the legal status of its 1/5th payment is like that of the principal itself, in that it must be paid from non-sacred property. The Talmud affirms: Learn from it that it is so.

אמר רבא, גבי גזל כתיב: ״וחמשתיו יסף עליו״. ותנן: נתן לו את הקרן, ונשבע לו על החומש ⁠– הרי זה מוסיף חומש על חומש, עד שיתמעט הקרן פחות משוה פרוטה.

§ Rava said: With regard to robbery, it is written: “And he should restore the robbed item that he robbed…and he should add its 1/5th payments to it” (Leviticus 5:23–24), and we learned in a Mishnah (Bava Kamma 103a): If the robber gave the robbery victim the principal and took a false oath to him concerning the additional 1/5th payment, asserting that he had already paid it, then the additional 1/5th is considered a new principal obligation. This robber adds an additional 1/5th payment apart from the additional 1/5th payment about which he had taken a false oath. If he then takes a false oath concerning the second 1/5th payment, he is assessed an additional 1/5th payment for that oath, until the principal, i.e., the additional 1/5th payment about which he has most recently taken the false oath, is reduced to less than the value of one peruta.

גבי תרומה כתיב: ״איש כי יאכל קדש בשגגה ויסף חמשיתו עליו״. ותנן: האוכל תרומה בשוגג ⁠– משלם קרן וחומש. אחד האוכל ואחד השותה ואחד הסך. אחד תרומה טהורה, ואחד תרומה טמאה ⁠– משלם חומשה וחומשא דחומשא. ואילו גבי מעשר, לא מכתב כתיב, ולא מיתנא תנא, ולא איבעויי איבעיא לן.

Rava continues: With regard to teruma too, it is written: “If a man eats that which is sacred unwittingly, then he should add its 1/5th payment to it” (Leviticus 22:14), and as we learned in a Mishnah (Terumot 6:1): One who partakes of teruma unwittingly pays the principal and an additional 1/5th. This is the halakha whether it concerns one who partakes of teruma, or one who drinks it, or one who applies oil to himself; or whether it is ritually pure teruma or ritually impure teruma. He pays its 1/5th payment, and if he partook of that 1/5th, he pays 1/5th of its 1/5th. Rava concludes: While with regard to second tithe, it is neither written in the Torah, nor taught in a Mishnah, nor raised as a dilemma before us by the amora’im.