Allah gives the rain

  As narrated by Zaid bin Khalid Aljuhani: "The Prophet (PBUH) led us in Dawn prayer (Fajr)  at Alhudaiybeyah after a rainy night, on completion of the prayer, He faced the people and said Do you know what your Lord has said?, the people replied Allah and His Messenger know best, He said Allah has said in this morning one of My servants became a believer in Me, and one a disbeliever, as for him who said we have been given rain by bounty of Allah and His mercy, that one is a believer in Me, a disbeliever in the stars, and as for him who said we have been given rain by such-and-such, and such-and-such star, that one is a disbeliever in Me, a believer in the stars (Sahih Albukhari 846).

Commentary:

 The people in Pre-Islamic era (Aljahiliyah) believed that rain was sent down by the movement of the stars, not by Allah's bounty and mercy, and whoever denies that rain was sent down by Allah's bounty and mercy, then he will deny that Allah is the Provider of all human beings; For Allah has stated in many verses of the Holy Quran that He is the only One who sends down the rain from the sky then He brings forth thereby plants of everything for mankind, the cattle and the birds, as in Aya (99) of Surat Alan'am "And He is the One who has sent down water from the sky, then We have brought forth thereby plants of everything, We produced from it greenery form which We produce grains interwoven, and from the palm-trees from its inflorescence are clusters hanging near, and gardens of grapes and the olives and pomegranates, similar and not similar, Look at its fruit when it yields and its ripeness, indeed, in that there are signs for a people who believe".

 So Allah is the only One who sends down water from the sky, then He brings forth thereby plants of everything for mankind, the cattle and the birds, and Allah produces from it greenery of trees and plants from which He produces grains set one upon the other like the ears of wheat, rice, and barely, and from the palm-trees, there are short palm-trees that are closed to the ground, therefore, from its inflorescence are clusters that are close and hanging near, so they are accessible to the people unlike tall palm-trees that are mentioned in Aya (10) of Surat Qaaf which are at high altitudes and require effort to pick the dates. And Allah also has produced orchards of grapes, and produced the olives and pomegranates which are similar in leaves, and close to each other in the shape of the tree, but the olives and pomegranates are not similar in shape, taste, and smell of the fruit, thereupon, Allah commanded mankind to look at its fruit when it yields, and at its ripeness at the time of its harvest, and how Allah has produced plants of everything that are different in colors, shapes, tastes, and smells, even though they came forth of the same soil, and are watered by the same water, and Allah has made some better than others in taste as He has stated in Aya (4) of Surat Alra'd, and in that there are signs for a people who believe in Allah and His great ability to produce all plants from one water and one soil and He is the only One who is capable of growing these plants.

 Allah has made rain as a sign of His Ability to revive the dead on the day of resurrection as the example of the rain and the dead land is the same way of the rain and the dead on the day of resurrection as He has stated in Aya (9) of Surat Fatir "And Allah is the One who sends the winds, then they stir the clouds, and We drive them to a dead land so We revive thereby the earth after its death, thus is the resurrection", so Allah cites an example of His Ability to revive the dead on the day of resurrection, where when the land dies and becomes with no vegetation, Allah sends the winds in order to stir the clouds, and then He drives the clouds to rain on the dead land, so He revives by the rain the land after its death, likewise, the resurrection will be in a same manner, where the Prophet Muhammad (PBUH) said in narration of Abu Hurayrah: "Between the two blows of the trumpet, there will be forty, the people said O Abu Hurayrah! Forty days?, I refused to reply, they said forty months?, I refused to reply, they said forty years?, I refused to reply, then Allah will send water from the sky and then the dead bodies will grow like vegetation grows, there is nothing of the human body that does not decay except one bone, that is, the little bone at the end of the coccyx of which the human body will be resurrected on the day of resurrection" (Sahih Muslim 2955 a).