פירוש על שבת 42:3

For its measure: That there should be this measure of oil in it. However if it was extinguished, he is not bound to it.

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.