Najasat ki bina pr rang, zayeqa, bu badale to najis ho jayega kur pani. Qalil pani me thodi bhi najasat giri to pani najis hy. Najasat se pani chenge nahi huva to muzaf hy lekin paak hy. Dusro ko pak nahi kr sakta. Example sharbat.
3 me se 1 bhi badal jaye to muzaf hy; rang, zayeqa, bu (smell)