A proverb meaning that acting in haste leads to mistakes; it's better to be careful and not rush (haste makes waste).
急いては事を仕損ずるから、最後にもう一度書類を見直して。
Haste makes waste, so check the documents one more time before handing them in.
新しいソフトを急いで導入したら不具合が出た。やはり急いては事を仕損ずるね。
We rushed to install the new software and ran into bugs. As expected, haste makes waste.
母はいつも『急いては事を仕損ずる』と言って、子供にも落ち着いてやるよう教えた。
My mother always said 'haste makes waste' and taught us to do things calmly.