Reference for Makkot 25:2

<big><strong>גמ׳</strong></big> אמר רב כהנא מחלוקת בשש דמר סבר (במדבר לה, יב) לכם לקליטה ומר סבר לכם לכל צרכיכם אבל בארבעים ושתים דברי הכל היו מעלין להם שכר

<b>GEMARA:</b> Rav Kahana says, The dispute [in our Mishna] only concerns the six [primary cities of refuge]. That one opinion [Rebbi Yehuda] holds (Numbers 35,12) "For you" implies [only] for protection. And the other opinion [Rebbi Meir] holds "For you" implies for all of your needs. But by the forty two [additional cities of refuge] everyone agrees that [the murderers] would pay rent.

Jastrow