[If a cloth that is] three [handbreadths] by three [handbreadths] was divided, [each half] is tahor from midras tumah, but is tamei [due to] contact with a midras. R’ Yose said: Why, which midras did this [cloth] touch? Rather [each half is tamei] only if the zav himself touched [the garment], [rendering] it tamei [on account of] the zav’s touching.