'Article' in the Bible

Furthermore, anything on which they fall when they're dead becomes unclean, whether on an article of wood, clothing, skin, or a sack. And any vessel used for any work is to be washed in water, because it has become unclean until evening.

in woven or knitted material, in leather, or with any article containing leather,

if the contagion is greenish or reddish in the clothing, leather, woven material, knitted material, or with any article containing leather, it's a fungal infection and is to be shown to the priest.

But if it recurs on the clothing (whether woven or knitted material) or on any article made of leather, it's a breakout, so incinerate it with fire wherever the contagion is found.

Then the clothing (whether it is woven or knitted material) or any article made of leather that you've washed, if the contagion has been removed from it and it's washed a second time, then it's clean.