Answer:
(Fatwa: 762/710 =L -1429)
It is haram to reveal faults and bad habits of others before people. However, if a person does fraudulence, it is allowable to complain him to the government for preventing him form his fraudulence.
و فی الشامی: وإذا كان الرجل يصوم و يصلي ويضر الناس بيده ولسانه فذكره بما فيه ليس بغيبه حتى لو أخبره السلطان ليزجره لا إثم عليه (كتاب الحظر والإباحة)
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband
