Exodus 5:8

ואת מתכנת הלבנים means the total number of bricks which each made per day when straw was being supplied to them — that total you shall impose upon them now also, in order that the service may be hard upon them. כי נרפים signifies because they have loosened themselves from the work; therefore (this word in Rashi corresponds to על כן in the Hebrew text) their mind turns to idleness and they cry out, saying, נלכה וגו׳ LET US GO [AND SACRIFICE etc.]. מתכנת — This word, and ותכן (v. 18), and the words of the same root in (I Samuel 2:3) “And by Him actions are counted (נתכנו)” and in (2 Kings 12:12) “the money that was counted (המתכן)”, all have the meaning of counting. נרפים — The work is loose (רפויה) in their hand and neglected by them so that they are loosened (הם נרפים) from it. In old French retrait.

וְאֶת־מַתְכֹּ֨נֶת הַלְּבֵנִ֜ים אֲשֶׁ֣ר הֵם֩ עֹשִׂ֨ים תְּמ֤וֹל שִׁלְשֹׁם֙ תָּשִׂ֣ימוּ עֲלֵיהֶ֔ם לֹ֥א תִגְרְע֖וּ מִמֶּ֑נּוּ כִּֽי־נִרְפִּ֣ים הֵ֔ם עַל־כֵּ֗ן הֵ֤ם צֹֽעֲקִים֙ לֵאמֹ֔ר נֵלְכָ֖ה נִזְבְּחָ֥ה לֵאלֹהֵֽינוּ׃

And the quantity of the bricks, which they did make heretofore, you shall lay upon them; you shall not diminish aught of it: for they are idle; therefore they cry, saying, Let us go and sacrifice to our God.