Surah 79. An-Naziat, Ayah 31

The term "pasture" (mar'a) connotes here, metonymically, all herbal produce suitable for consumption by man or animal (Razi).

The underground springs and wells of water as well as rivers and glaciers in northren climates are due to the different levels of highlands not lowlands. They spread the moisture evenly as wanted, and give corn, fruits, and vegetables to man, and pastures and feeding grounds to beasts of the fields. For the wonderful circuit or cycle of water between heaven and earth, see notes 3106 (xxv. 49) and 3111 (xxv. 53).