פירוש על מגילה 30:10

The arm of Pharaoh’s daughter: "And she sent her arm (or miadservat) and she fetched it" (Exodus 2:5).

[We teach (follow) this version: Do not read (it), "You have broken (shibarta)," but (as), "You have extended (sherabavta)." It is an expression (like the usage in Sukkah 5a), "ishtarbuvei. And we do not teach, "You have increased (sherivavta)."]

With the teeth of the wicked: [Referring to] Og, King of Bashan - in Tractate Berakhot [in] the chapter [entitled] HaRoeh (Berakhot 54b) - who uprooted a mountain three parasangs long, to throw it upon Israel, and brought it on his head. So The Holy One, Blessed be He, brought ants upon it and they pierced it and it fell on his neck. He wanted to remove it, but his teeth were extended this way and that way.

Do not read, "You have broken (shibarta)," but as, "You have extended (sheribavta)": We teach (follow) this version. And this teaching is derived from, "the teeth of the wicked (shinei reshayim)." For let the verse write, "and the tooth of the wicked one (shen rasha:)! Rather [it is to add the extra] yod of shinei and the [extra] yod mem of reshayim - behold [the total numerical count of these three letters is] sixty.