Taking Original Najāsah in to the Mosque
Issue No.830- It is haram, as an obligatory precaution, to take an original najāsah (e.g., blood and urine) into the mosque, even though it may not cause desecration of the mosque. However, there is no problem if the najāsah is very small which is sometimes in the clothes of the person who enters the mosque or the clothes of children. Similarly, taking something which has become najis into the mosque like najis clothes or shoes is not haram, provided that it does not cause desecration of the mosque and does not make the mosque najis.