One who touches the upper beam, the lower beam, the heddles, the reed, the thread which he placed upon purple wool, or a swatch that he does not intend to leave there is tahor. [One who touches] the weft of the fabric, the standing warp, the doubled [material] which he placed upon purple wool, or a swatch that he intends to leave there is tamei. One who touches the wool which is on the distaff [or] on the ashvayah is tahor. One who touches the whorl before he uncovers it is tamei. [One who touches it] after he uncovers it is tahor.