When it is dry, it can’t be transferred unless it meets something wet or some of its mass is visibly seen on the other object.

If the impurity (example blood or urine) gets dry, will it be transferred to anything which comes in its contact especially when it’s on the wall?

Purity | August 9, 2015 7:49 pm
Previous

What types of impurity (najasah) on clothes and the place where one prays, make a man’s prayer invalid?
Next

is it permissible to make wudu whilst wearing the hair in a bun, because this will prevent the hands to reach the whole head? If there is no problem in that, should we wipe our hands over the bun?