るを はかりて ずるを
iruo hakarite i zuruo nasu

Godan Verb (su)
Expression

1. consider your income before spending

Proverb
もっと経費 けいひ おさえろよ。入 はいるを はかりて ずるを す、ということを らんのかね。
motto kēhio osaeroyo. hairuo hakarite de zuruo nasu to iu kotō shiran nokane.
We have to cut business expenses here. Haven't you ever heard of looking at how much you're getting before you start spending?