Rashi on Numbers 32:42/רש"י על במדבר ל״ב:מ״ב

1ויקרא לה נבח AND HE CALLED IT NOBAH — The word לה has no Mappik in the ה (as the word לָהּ "to it", usually has). Now I have seen the following in the work of R. Moses the Preacher: Because this name did not remain permanently to it, therefore the letter ה is weak (without a Mappik), — the implication of his explanation being that it (the word לה) is the same as לא “not”. But I wonder what explanation he will give of the two words similar to it, (Ruth 2:14): “And Boaz said לָה", and (Zechariah 5:11): “to build a house לָה”.