וַיְהִי֙ עַם־הָאָ֔רֶץ מְרַפִּ֖ים יְדֵ֣י עַם־יְהוּדָ֑ה ומבלהים [וּֽמְבַהֲלִ֥ים] אוֹתָ֖ם לִבְנֽוֹת׃
Then the people of the land weakened the hands of the people of Judah, and harried them while they were building,
Rashi on Ezra
the people of the land They are the adversaries of Judah and Benjamin.
Rashi on Ezra
from building Heb. לִבְנוֹת, lit. to build, and so (Gen. 41:49): “until one ceased to count (לִסְפֹּר).”