Transmission of Najāsah by Insects
Issue No.148- If a fly or any other insect sits on something najis which is wet, and then sits on a ṭāhir object, it will not become najis, since it is likely that the legs of the insect have not acquired any wetness. However, if one is sure that it has carried a najāsah with it and the najāsah has been transferred, it will become najis.
