Investigating the hydrological concepts of rain in the Qur'an based on Nahj al-Balaghah

The advancement of science in the mind of every fair person raises the question of how rain is accurately, scientifically and eloquently expressed in the Holy Book of the Qur'an and Nahj al-Balaghah. This means that these books, verses and speeches have described the natural elements according to the level of knowledge and understanding of the scientific subjects of their time. Therefore, in this study, the sciences in this sermon on rainfall and its request from the Creator of the universe have been studied by using the verses of the Qur'an and the interpretation of Imam Ali (as) in Sermon 115 of Nahj al-Balagheh. The purpose of this study is to compare the exact statements of Imam Ali (as) in the rain sermon with the modern science of weather and meteorology about the mechanism of formation, movement, and various forms of rainfall on Earth. Finally, different types of rain and the theory of the formation of raindrops (desegregation and bergeron) and effective rain are mentioned by carefully examining the sermon of the Prophet.