וְאֶת־הַמַּטֶּ֥ה הַזֶּ֖ה תִּקַּ֣ח בְּיָדֶ֑ךָ אֲשֶׁ֥ר תַּעֲשֶׂה־בּ֖וֹ אֶת־הָאֹתֹֽת׃ (פ)
A laskę tę weźmiesz w rękę twoję; nią owe znaki wykonasz."
Mishneh Torah, Leavened and Unleavened Bread
"And with signs" - this [refers to] the staff, as it is stated (Exodus 4:17); "And this staff you shall take in your hand, that with it you will preform signs."