How to Make Najis Wheat, Rice, Soap and the Like Ṭāhir
Issue No.185- If the exterior of wheat, rice, soap, etc., becomes najis, it will become ṭāhir by immersion in kurr or flowing water or by holding it under tap water. However, if their interior becomes najis, they should be kept in water enough that one becomes sure that water has penetrated in them and flowed out.