Reference for Bava Batra 189:10

לעולם דא"ל מרתף של יין סתם ותני ברישא דברייתא ומקבל עליו עשר קוססות למאה

[the owner] must accept ten failures for every hundred trees.<span class="x" onmousemove="('comment',' The owner must pay the workman for every hundred trees the full value of sound trees, though ten of them may turn out to be unproductive and useless. ');">¹⁸</span> [If the failures are] more than this [number],<span class="x" onmousemove="('comment',' More than ten per hundred. ');">¹⁹</span>

Jastrow