|Imam Abu Hanifa||Small amount (amount equal to the size of an impure (alloyed) dirham)||Analogy of minor uncleanliness upon the exemption disregarding the remaining trace of filth in case of cleaning with stones. It was limited to size of dirham as this is the size of the outlet.
According to Imam Abu Hanifa, filth is divided into gross and light. In the case of gross filth, the amount of exemption is limited to the size of a dirham while light filth is exempted up to the extent of a fourth of the dress. Light filth in his view is like the excrement of beasts of burden and those from which the streets are seldom free.