Cat feces and urine are impure (najis), and they are considered major filth. It automatically follows that animal products from non-Muslim sources cannot be considered tahir and halal unless we come to know otherwise. OR Should we start with the assumption that everything is tahir and halal unless we come to know otherwise? So first we will describe the various types of water and then explain the rules of purification. The words relevant to our subject are: He sent down upon you water from heaven to purify you with it. The least that this verse proves is that semen is najis, and with its discharge a man becomes ritually impure. And when this happens, then the only way to make them tahir is istibra'. Household Cats & Soiled Furniture Fuzayl bin Yasar, Zurarah bin A'yan and Muhammad bin Muslim, the three highly respected companions of the fifth and sixth Imams, asked Imam Muhammad al-Baqir (as) about buying meat from the markets while they do not know what the butchers do when slaughtering the animals. A query regarding the Hadith narrator Sulayman ibn Musa Al Qurashi, The Pre-Conditions of Combining Prayer (Jama) in Rain, Translating Islamic Works and Then Selling Them, Shaykh Afifi Al-Akiti Ash-Shafiis Talk on Ikhtilaf Al-Ummah. Log in, //