Fresh WaterOut of all the water on Earth, saline water in oceans, seas and saline groundwater make up about 97% of it. Only 2.5-2.75% is fresh water, including 1.75-2% frozen in glaciers, ice and snow, 0.5-0.75% as fresh groundwater and soil moisture, and less than 0.01% of it as surface water in lakes, swamps and rivers.
Salts cannot evaporate hence cannot join the water cycle.
There is no mechanism that transports salts from seas to top of mountains. The snow on top of high mountains is actually frozen freshwater. However 1400 years ago the Quran said that high mountains have freshwater.
Freshwater on mountains.
How could an illiterate man who lived 1400 years ago have known that that all water on mountains is freshwater?
The Quran (Koran, the book of Islam) contains scientific knowledge that could not have been known 1400 years ago. It ranges from basic arithmetics to the most advanced topics in astrophysics. You are invited to go through those miracles and judge for yourself.