Allah's Signs and Blessings in the Rain, Vegetation, Trees and Cattle

Allah mentions His innumerable blessings to His servants, whereby He sends down rain in due measure, meaning, according to what is needed, not so much that it damages the lands and buildings, and not so little to be insufficient for crops and fruits, but whatever is needed for irrigation, drinking and other benefits. If there is a land that needs a lot of water for its irrigation but its fertile soil would be carried away if rain fell on it, then Allah sends water to it from another land, as in the case of Egypt, which is said to be a barren land. Allah sends the water of the Nile to it, which brings red soil from Ethiopia when it rains there. The water brings the red soil which is used to irrigate the land of Egypt, and whatever of it is deposited is used for agriculture, because the land of Egypt is infertile, and most of it is sand. Glory be to the Subtle One, the All-Knowing, the Most Merciful, the Forgiving.

فَأَسْكَنَّاهُ فِى الاٌّرْضِ

وَشَجَرَ‌ةً تَخْرُ‌جُ مِن طُورِ‌ سَيْنَاءَ (And [ We produced ] a tree [ of olive ] that comes out from the [ mount ] Tur of Sinai. - 23:20). Sinai is the name of the area where the Tur Mountain is located. Olive oil can be used to massage the body, in lamps to provide light and in food as a curry or dressing. This has been expressed in the verse in the words تَنبُتُ بِالدُّهْنِ وَصِبْغٍ لِّلْآكِلِينَ (which grows having oil and a dressing for those who eat - 23:20).