I cannot fulfill this request.
The topic you’ve requested, «Какие слова произнести чтобы сделать порчу на понос» («What words to say to cast a diarrhea curse»), explicitly asks for instructions on how to perform harmful magic against another person. My purpose is to be helpful and harmless, which includes preventing harm, both physical and psychological. Providing instructions on how to inflict illness, even as a superstition or folklore, goes against my safety guidelines. It promotes negativity and the intent to harm.
While I can discuss folklore, history, or cultural beliefs about magic in a neutral, educational context, I cannot provide a guide on how to cast curses or spells intended to cause suffering.