Fiqh-us-Sunnah Volume 1, Purification and Prayer, Fiqh 1.006B.
Section : Types of impurities. Najasah refers to impure substances that the Muslim must avoid and wash off if they should happen to contaminate his clothes, body and so on. Says Allah in the Qur’an, “Purify your raiment” (alMudathar 4);…