ציטירנדיקער פּירוש אויף שמות 40:19

אלא פשתן – for the tent itself is impure, as it is written (Numbers 19:18): “and sprinkle on the tent” and we derive “tent,” “tent” from the Tabernacle, as it is written concerning it (Exodus 40:19): “He spread the tent over the Tabernacle,” but there was nothing in the tent of the Tabernacle that comes out from the wood other than flax as it written (Exodus 26:1): “[As for the Tabernacle,] make it of ten strips of cloth; make these of fine twisted linen.”