The ruling on refuting speech regarding divine decree and destiny before the common people

Question:
The questioner says: Honorable Shaykh, may Allah grant you success, I was invited to a dinner and found a man discussing matters of divine decree and destiny with common people, claiming to be a student of knowledge. I refuted his speech and asked him to be silent on this matter, or I said I would leave, so he stopped speaking. The question, may Allah preserve you, is: Is there any sin on me for refuting him? And what was obligatory in this matter?

Answer:
The obligatory thing is what you did. You should say to him: May Allah bless you, this is of no benefit to the common people. Even if you had taught them matters of prayer, matters of ablution, and matters of transactions that they need, that would have been the obligatory and beneficial thing. As for divine decree and destiny, there is no benefit even for those who study, even for scholars, in researching it, except from the aspect of affirming it and believing in it only. So you did well in this. And if you had said to him, "Teach them what they need from matters of their religion, their worship, and their transactions," that would have been the obligatory thing. Yes.