Some groups immerse themselves in the issue of karamat (miracles granted to a righteous person) for the sake of calling people to Allah, so what is the guidance?

Question:
May Allah reward you, Honorable Shaykh. This questioner says that in some groups, there is an immersion in the issue of karamat (miracles granted to a righteous person). When we deny this to them, they ask, "Do you deny karamat like the Mu'tazilah (a rationalist theological sect)?" How do we respond to this shubhah (a doubtful matter), knowing that they use them in their means of da'wah (calling others to Islam)?

Answer:
You have a criterion for this: if an extraordinary event occurs through the hand of a believing, pious person, it is a karamah (a miracle granted to a righteous person). If it occurs through the hand of a wretched disbeliever, it is a satanic anomaly. This is the rule. Not every extraordinary event is a karamah. Also, it is necessary that what is claimed be established; otherwise, it becomes mere gossip and stories, "this happened" and "that happened." The establishment of these things is required.
There is no need to use them in da'wah (calling others to Islam) and sermons. There is no need for this, because it confuses people and sometimes causes them to doubt. 'Umar (may Allah be pleased with him) said, "Narrate to people what they know. Do you want Allah and His Messenger to be lied about?" Yes.