R’ Eliezer says: If one did not bring an instrument [for circumcision] before the Sabbath, he should bring it on the Sabbath exposed; and in [times of] danger, he should cover it in the presence of witnesses. Furthermore, said R’ Eliezer: We may fell trees in order to make charcoal and to form an iron instrument. [But] R’ Akiva stated a rule: Any work that can be done before the Sabbath does not override the Sabbath; but [any work] that cannot be done before the Sab-bath does override the Sabbath.

We may perform all the necessities of circumcision on the Sabbath: we may circumcise, uncover [the corona], draw [the blood], and place a bandage and cumin upon it. If he did not crush [the cumin] before the Sabbath, he may chew [it] with his teeth and apply [it]. If he did not vigorously mix wine and oil before the Sabbath, each one should be added [to the bowl] by itself. We may not fashion a shirtlike bandage for it, but one may wrap a piece of cloth around it. If he did not prepare [it] before the Sabbath, he may wrap [it] around his finger and bring [it], even from another courtyard.