Jazakallah for your advice, I though have trouble understanding your answer. You state that if the effected part (private parts) is more then a dinar (2.75cm), you must perform instinja with water. 1) Is this what you are saying? 2) If I urinate the efffected part is not bigger then a dinar, so i may use toilet paper, if a person does stool the effected part is more then a dinar, so it is obligatory to use water (this is every time a person does stool). 3) Is it obliagtory or sunna to use water for istinja or toilet paper is ok; Is the purpose only to clean? 4) If the effected part is more then a dinar and I use toilet paper does that make salah invalid? Please explain.
If the impurity exceeds an area of 2.75 cm. then, it is compulsory to use
water.
We hope the above clarify your question.
and Allah Ta’ala Knows Best
Mufti Ebrahim Desai
FATWA DEPT.