Commentary for Shabbat 42:3
וכבתה אין זקוק לה ורמינהו מצותה משתשקע החמה עד שתכלה רגל מן השוק מאי לאו דאי כבתה הדר מדליק לה לא דאי לא אדליק מדליק וא"נ לשיעורה:
I would have learnt this dictum originally. But he learnt it [now]? — The difference is in respect of the studies of one's youth.<span class="x" onmousemove="('comment',' These are more abiding. Abaye felt that he would have had a surer hold upon it had he learned it earlier. ');"><sup>5</sup></span> Now, if it goes out, does it not require attention? But the following contradicts it: Its observance is from sunset until there is no wayfarer in<span class="x" onmousemove="('comment',' Lit., 'Until the foot ceases from'. ');"><sup>6</sup></span>
Rashi on Shabbat
For its measure: That there should be this measure of oil in it. However if it was extinguished, he is not bound to it.
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Tosafot on Shabbat
That if one did not light, he must light: But from then on, the time has passed. RI Porat says that one should be careful and light immediately at night, so that he not delay too much. Nevertheless, if he did delay, he should light out of uncertainty. As behold, another answer is [also] answered. But it appears to RI that now there is no concern when one should light; for we only have the recognition of the members of our household [in our times], since we surely light indoors.
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