d. It is lawful to warn Muslims of evil and to give them advice (one’s intention should be solely to give advice).'
e. If one is openly displaying his sinful acts and Bid'ah (religious innovations).
f. If one is known with a certain title such as ‘the blind’, ‘the one who limps’ it is lawful to call him by this. Bear in mind it is unlawful for one to call an individual by these titles if they are used to scoff, belittle or disrespect that individual.