Is it permissible to perform bariatric (stomach stapling) surgery for weight loss if the weight has reached 166 kilograms, and it is impossible to lose it through diet and exercise, and the obesity has caused difficulty in performing prayers and joint pain?

It is permissible to perform sleeve gastrectomy operations if safety is predominant in the surgery and serious complications do not occur, and it is determined to be a way to eliminate morbid obesity causing hardship, exhaustion, and harm. This is not considered altering Allah's creation; rather, it falls under the category of treatment. However, it is a condition that it is highly probable that no greater harm or corruption will result, and in this regard, the opinion of a trustworthy physician should be sought. It is preferable to start with diet and weight loss methods, and if they are not effective, surgery may be resorted to after ensuring its safety.