[In] three cases [concerning tumah susceptibility], R' Tzadok rules [that the articles can become] tamei and the Sages rule [that they are] tahor: (a) the nail of a money changer, (b) and a grist-merchant's chest, (c) and the nail of a sundial; R' Tzadok deems [these three capable of becoming] tamei, but the Sages rule that they are tahor.