Reference for Berakhot 30:24
א"ל דאמר לך מני ר' יהודה היא דאמר גבי סוטה אלות כותב צואות אינו כותב והתם הוא דכתיב (במדבר ה, כג) וכתב את האלות האלה אבל הכא דכתיב וכתבתם אפי' צואות נמי
Raba said to him : Should one ask thee whose teaching this is, it is R. Judah's; for he stated with reference to the woman suspected of adultery : One writes the curses but not the words of the command, because in this connection it is written, "And the priests shall write these curses in a scroll" (Num. v. 23), but here [in connection with Tefillin] it is written, "And thou shalt write them," i.e. even the words of the command.
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