BT Er 25a(37) :בעידנא דשדא לא קא שבח בעידנא דשבח שבחא דממילא הוא‏ : when he sowed (the turnips, the field) was not increasing in value. When it increased in value, the increase was of itself
See the entire entry for šbḥ#2 vb. to grow, sprout; increase in value