Is it permissible to wear black clothes?
Answer
(Fatwa: 1675/1675/M=1432)
It is lawful for women without karahat; also there is no harm for male to wear it. However it becomes the sign of Shia in the month of Muharram; hence it is better to avoid.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband