Reference for Moed Katan 27:13
מיתיבי אמר ר' נראין דברי ר' יהודה כשיצא שלא ברשות ודברי חכמים כשיצא ברשות מאי שלא ברשות אילימא לשוט והאמרת דברי הכל אסור ואלא למזונות והאמרת דברי הכל מותר אלא פשיטא להרויחא
If I say for going on a tour, did you not say that all are agreed that he is forbidden?<span class="x" onmousemove="('comment',' To attend to his personal appearance during the festival week.');"><sup>15</sup></span> Again [should it mean] for seeking [his] bread; surely did you not say that [if with this object] all are agreed that is allowed?<span class="x" onmousemove="('comment',' To attend to his personal appearance during the festival week.');"><sup>16</sup></span> It is obvious therefore that it means for profit-seeking.<span class="x" onmousemove="('comment',' I.e., R. Judah does not approve of a sea voyage for mere gain or profit.');"><sup>17</sup></span>