What is the criterion that determines that mentioning a characteristic of a person constitutes backbiting? And is mentioning a characteristic that is disliked by the general public considered backbiting, even if the person himself does not dislike it? And is speaking ill of a person without mentioning their name considered backbiting, especially if they can be identified from the context of the speech?

Backbiting is an evil and forbidden act. It is to mention a Muslim with something he dislikes, and it includes any words from which a Muslim's shortcoming can be understood, whether it is concerning his body, religion, worldly affairs, character, wealth, or anything else related to him. Backbiting occurs through speech, writing, symbols, or gestures. As for backbiting an unknown person, such as saying, "I have a stingy friend" without specifying him, it is not considered backbiting.