Is it forbidden to eat dates, fresh dates, raisins, or grapes if they are boiled, whether in pastries or other foods, or if they are soaked in water then boiled for use in food?

"Nabeedh" refers to beverages made by soaking dates, raisins, honey, wheat, or barley in water. It is called "nabeedh" whether it is intoxicating or not. Drinking it before it turns into khamr (intoxicating wine) is not disliked, provided two conditions are met: it must not have passed three days and nights, and two different types (like dates and raisins) must not be mixed within it. If it exceeds three days, or if two types are mixed, then it becomes disliked, but it is not forbidden unless a large quantity of it intoxicates, in which case both small and large quantities become forbidden. The reason for the prohibition is its reaching the point of intoxication, which jurists refer to as "boiling" (al-ghalayan). This means the change that indicates intoxication, not heating or cooking. As for the foodstuffs mentioned in the question, they are not originally part of the concept of intibadh, and therefore they are not forbidden unless they cause intoxication.