The Prophet ﷺ once said:
“Do you know what backbiting is?”
They said, “Allah and His Messenger know best.”
The Prophet ﷺ said, “To mention your brother in a way he dislikes.”
It was said, “What if it is true about him?”
The Prophet ﷺ said, “If what you say about him is true, it is backbiting. If it is not true, it is slander.”
It's important we defend the honour of our Muslim brothers and sisters at all times.