“In essence, what is forbidden to do is likewise forbidden as an object of reflection. Included in this is thinking about the weaknesses or faults of others, whether they are present or not. The Prophet said, "There is a tree in Paradise reserved for one
whose own faults preoccupied him from considering the faults of others." Spending time thinking or talking about other people's faults is foolish. Time is short and is better invested in recognizing one's own shortcomings and then working consistently to eradicate them.”