Is it sufficient to cleanse with tissues, or is water necessary?

After relieving oneself, it is obligatory to remove impurity from the area with water or other means, with the preference for using water. The Permanent Committee for Issuing Fatwas has permitted the use of tissues and papers for istijmar (cleansing after defecation or urination) if they cleanse and purify the spot. It is not obligatory to use water afterward; rather, it is sunnah (recommended). Sheikh Muhammad Salih al-Uthaymeen emphasized that tissues suffice for istijmar because the purpose is to remove impurity, but it is not permissible to use what the Sharia has forbidden, such as bones and dung.