R. Kaduri used to smoke 3 times a day. At his old age, I wouldn't think that he did it for any other reason but to smoke. I've heard that R. Kaduri was asked the question as to why he smoked, and he ...
Are there any practical halachot (not minhagim) that are a direct consequence for our concern for demons or 'evil spirits'?
Are there really such thing as sheidim? If so, what are they? Please include sources.