We may not place a utensil under a lamp to catch the [dripping] oil, but if he places it while it is yet day, it is permissible. And we may not benefit from it, since it is not something prepared [for Sabbath use]. We may move a new lamp, but not an old one. R’ Shimon says: All lamps may be moved, except a lamp burning on the Sabbath. We may place a utensil under a lamp to catch sparks; but one may not place water in it, because he extinguishes [them].