Reference for Bava Kamma 200:4
<big><strong>גמ׳</strong></big> מאי כאור אמר ר"נ אמר רבה בר בר חנה כלבוס מאי כלבוס אמר רבה בר שמואל
WAS GREATER THAN THE INCREASE IN VALUE HE WOULD HAVE TO PAY HIM THE AMOUNT OF THE INCREASE, [WHERE WOOL WAS HANDED TO A DYER] TO DYE RED AND HE DYED IT BLACK, OR TO DYE BLACK AND HE DYED IT RED, R. MEIR SAYS THAT HE WOULD HAVE TO PAY [THE OWNER] FOR THE VALUE OF HIS WOOL. R. JUDAH, HOWEVER, SAYS: IF THE INCREASE IN VALUE<span class="x" onmousemove="('comment',' V. p. 585, n. 11. ');"><sup>7</sup></span> IS GREATER THAN THE OUTLAY, THE OWNER WOULD PAY THE DYER HIS OUTLAY, WHEREAS IF THE OUTLAY EXCEEDED THE INCREASE IN VALUE HE WOULD HAVE TO PAY HIM NO MORE THAN THE INCREASE.<span class="x" onmousemove="('comment',' V. supra 95a-b. ');"><sup>8</sup></span> <b><i>GEMARA</i></b>. What does KA'UR mean? — R. Nahman said that Rabbah b. Bar Hanah stated: It means that the 'copper'<span class="x" onmousemove="('comment',' [G] ');"><sup>9</sup></span> dyed it. What is meant by saying that the 'copper' dyed it? — Said Rabbah b. Samuel: