Talmud (Rodkinson Edition) — Book 1…
“ Have we not learned in a Mishna, that all covers of vessels having handles attached may be handled on Sabbath? Referring to this, R. Jehudah b. Shila in the name of R. Assi, quoting R. Johanan, said, that such would be the case only if the covers could be made use of as independent vessels. (How, then, can R. Johanan hold with R. Simeon ben Gamaliel, who says, that the stick which was not fastened to the door may be used on Sabbath, surely it is not an independent vessel?) ”
