Does the knife cut by itself, or only by Allah’s permission?

Question:
May Allah reward you, Honorable Shaykh. This questioner says: What is the ruling on the one who says it is obligatory to attribute the certainty of the defective to the essence of things, and to attribute the certainty to the cause of the causes? The knife does not cut; rather, it cuts.

Answer:
Sufis. This is the talk of the Sufis; leave it alone. The knife cuts; Allah made it cut. It is a weapon, and the sword cuts. It is among the harmful causes. Yes, they say no, these things do not do anything; these do not do anything. They deny their function. Allah made them function. Try the knife, my brother. The knife does not cut? Try it. Yes.