And if the priest look, and, behold, the plague [be] somewhat dark after the washing of it,.... Is become of a weaker colour, either not quite so green, or not quite so red as it was, or is "contracted", and does not spread itself, See Gill on "Le 13:6"; but is rather become less:then he shall rend it out of the garment, or out of the skin, or out of the warp, or out of the woof; that is, that piece which has the plague in it, and burn it, as Jarchi says; that so the whole may not be lost, which is otherwise pure, and clean, and free from any infection.
The manner of expression confirms what I have observed on Le 13:48; that the warp and woof are considered as separate things, and as before they are wove together, or wrought into one garment.