וְזֹ֣את הַמִּצְוָ֗ה הַֽחֻקִּים֙ וְהַמִּשְׁפָּטִ֔ים אֲשֶׁ֥ר צִוָּ֛ה יְהוָ֥ה אֱלֹהֵיכֶ֖ם לְלַמֵּ֣ד אֶתְכֶ֑ם לַעֲשׂ֣וֹת בָּאָ֔רֶץ אֲשֶׁ֥ר אַתֶּ֛ם עֹבְרִ֥ים שָׁ֖מָּה לְרִשְׁתָּֽהּ׃
און דאָס איז דאָס געבאָט, די חוקים, און די געזעצן, װאָס ה׳ אײַער גאָט האָט באַפֿױלן אײַך צו לערנען, אױף צו טאָן אין דעם לאַנד װאָס איר גײט אַריבער אַהין, עס צו אַרבן;
Mishnah Menachot
Regarding the seven branches of the menorah, the [absence of] one invalidates the others. Regarding the seven lamps on it, the [absence of] one invalidates the others. Regarding the two portions of Scripture in the mezuzah, the [absence of] one invalidates the other; indeed even one letter can invalidate the whole. Regarding the four portions of Scripture in the tefillin, the [absence of] one invalidates the others; indeed even one letter can invalidate the whole. Regarding the four fringes, the [absence of] one invalidates the others, since the four together form one mitzvah. Rabbi Ishmael says: the four are four separate mitzvot.