Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
quran:30:48

It is Allah who sends the winds, and they stir the clouds and spread them in the sky however He wills, and He makes them fragments so you see the rain emerge from within them. And when He causes it to fall upon whom He wills of His servants, immediately they rejoice  

God is the One Who unleashes the winds which then raise, stir up, clouds, and He then spreads them across the heaven as He will, in small or large quantities, and He forms them into fragments (read kisafan or kisfan: ‘scattered pieces’) then you see the rain issuing out of them, that is, out of the midst of them. Then when He drops it, the rain, upon whomever of His servants He will, lo! they rejoice, they are happy because of the rain.
القرآن:٣٠:٤٨

اللَّهُ الَّذِي يُرْسِلُ الرِّيَاحَ فَتُثِيرُ سَحَابًا فَيَبْسُطُهُ فِي السَّمَاءِ كَيْفَ يَشَاءُ وَيَجْعَلُهُ كِسَفًا فَتَرَى الْوَدْقَ يَخْرُجُ مِنْ خِلَالِهِ ۖ فَإِذَا أَصَابَ بِهِ مَنْ يَشَاءُ مِنْ عِبَادِهِ إِذَا هُمْ يَسْتَبْشِرُونَ  

{الله الذي يرسل الرياح فتثير سحابا} تزعجه {فيبسطه في السماء كيف يشاء} من قلة وكثرة {ويجعله كسفا} بفتح السين وسكونها قطعا متفرقة {فترى الودق} المطر {يخرج من خلاله} أي وسطه {فإذا أصاب به} بالودق {من يشاء من عباده إذا هم يستبشرون} يفرحون بالمطر.