The World Federation One Stop Fiqh

Ruling 7

If before or after giving a fatwa on a matter, the most learned mujtahid expresses precaution – for example, he says: ‘An impure (najis) utensil that is washed once in kurr5 water becomes pure (ṭāhir), although based on precaution it should be washed three times’ – his follower does not have to perform this precautionary measure [but is recommended to]. This is called ‘recommended precaution’ (al‐iḥtiyāṭ al‐mustaḥabb).

5. A quantity of water greater or equal to approximately 384 litres. See Ruling 14.