Who did Abu Dharr insult? And what did he do with him?

Question:
This man whom Abu Dharr insulted..?

Answer:
A slave belonging to Abu Dharr.
Q: Here it says: There was a conversation between me and a man?
The Shaykh: He is a servant and he is a man, but he was vague here and clarified in another narration that he was a slave of his.
Q: It mentioned that it was Bilal (the commentator)?
The Shaykh: A narration?
The student: "I insulted a man" and its explanation has already been presented in the Book of Faith, and that the man mentioned is Bilal.
The Shaykh: No, that is not what is apparent. The intended meaning is a slave of his, as in the other narration: a slave of his, a slave belonging to Abu Dharr; for this reason, he would give him a set of clothes like his own, dressing him in a set like his own. Whenever he wore a new set of clothes, he would give him a new set. The observer saw with him a set of clothes that was different: the cloak was of one type and the lower garment was of another type, and on Abu Dharr was a similar cloak of one type and lower garment of another type. So the man said to him: If you were to take the lower garment on the slave that matches the cloak which matches your lower garment and put it on yourself, so that you would have a complete set of clothes and he would have a complete set of clothes. So he did what he said, intending to make him equal in quality and appearance.