Reference for Shabbat 58:3

<big><strong>מתני׳</strong></big> לא יקוב אדם שפופרת של ביצה וימלאנה שמן ויתננה על פי הנר בשביל שתהא מנטפת ואפילו היא של חרס ורבי יהודה מתיר אבל אם חברה היוצר מתחלה מותר מפני שהוא כלי אחד לא ימלא אדם קערה של שמן ויתננה בצד הנר ויתן ראש הפתילה בתוכה בשביל שתהא שואבת ורבי יהודה מתיר:

BUT R. JUDAH PERMITS IT. BUT IF THE POTTER JOINS IT BEFOREHAND, IT IS PERMITTED, BECAUSE IT IS ONE UTENSIL. A MAN MUST NOT FILL A DISH OF OIL, PLACE IT AT THE SIDE OF A LAMP, AND PUT THE WICK END THEREIN IN ORDER THAT IT SHOULD DRAW; BUT R. JUDAH PERMITS IT. <b><i>GEMARA</i></b>. Now, they are [all] necessary. For if we were told about an eggshell; there the Rabbis say [that it is forbidden] because since it is not loathsome<span class="x" onmousemove="('comment',' The oil in the eggshell is clean. ');">⁷</span> he will come to take supplies therefrom;<span class="x" onmousemove="('comment',' On the Sabbath. This is forbidden on account of extinguishing the light. [Though it is not actually extinguished when he removes some oil, it subsequently goes out sooner than it would otherwise have done.] ');">⁸</span>

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