(Devarim 33:27) "an abode (me'onah) for the G-d of yore": Three Torah scrolls were found in the azarah (the Temple court): one, the scroll of "me'on"; one, the scroll of "hi"; one, the scroll of "za'atutei." In one it was written "me'on for the G-d of yore," and in two, "me'onah for the G-d of yore." And the sages rejected the one and accepted the two. In one it was written (Shemoth 24:5) "And he sent "za'aturei the children of Israel," and in two, "na'arei the children of Israel." They rejected the one and accepted the two. In one it was written "hi" (it) was ten," and in two, "hi was eleven." They rejected the one and accepted the two.
Three Torah Scrolls Found with Tiny Variations
Sifrei Devarim 356:1