Parashas Behar · Aliyah 1 · Passuk 25:05
Chabad.org — English translation + Rashi
Torah Temimah cites Yerushalmi Sheviis 8:6.
English: “You shall not reap … you shall not gather.” What is the meaning of “you shall not reap and you shall not gather”? You shall not reap in the manner of the reapers and you shall not gather in the manner of the gatherers; rather, you may reap and gather with a change (shinui).
Classical derasha (Yerushalmi) — restriction of the ordinary manner of harvest.
The prohibition is against harvesting Shemittah produce in the ordinary manner; one may harvest with a change (shinui) in the usual method.