Why is the hand of the thief cut off, but not the hand of the robber?

Question : I tell you, the given amount is seven and a half.

Answer : No. The difference is that one cannot guard against a thief. He comes secretly, breaks open the box, and takes it. What is my fault? I am the owner of the money, and I am on guard. That is why, according to the majority of scholars, the hand is not cut off if the theft is from a place that is not securely guarded. That is, if we did not cut off the hand of the thief, people would never feel safe about their money. But robbery comes from the owner's negligence; it happens in the presence of the money. For example, someone passes by the shop, robs it, and leaves. Or this person has a razor in his hand and sees, "Look, what a nice watch I have," and he snatches it and goes, or something like that. Yes, if it is proven, the hand is not cut off.