Ilm al-huruf is a type of science that you can think of as a type of puzzle-solving. It is often used by religious scholars to help find answers to difficult questions and figure out how to interpret passages from religious texts. For example, ilm al-huruf might be used to figure out if certain words in a religious text should be read as a single word or as two different words. It can also be used to interpret metaphors and symbols. To do this, scholars use the letters of a word to figure out new meanings and possibilities. By understanding the relationship between the words, scholars can discover hidden meanings. Ilm al-huruf can help scholars understand the meanings of religious texts in ways that would be impossible without it.