Oddbean new post about login | logout I advise to read chapter 15, Invoking Allah for Rain (Istisqaa), of Sahih Bukhari (collection golf Hadith, sayings, of prophet Mohamed peace be upon him). https://sunnah.com/bukhari/15 13:12 Ar-Ra'd هُوَ الَّذِي يُرِيكُمُ الْبَرْقَ خَوْفًا وَطَمَعًا وَيُنْشِئُ السَّحَابَ الثِّقَالَ It is He (God) who shows you lightening, [causing] fear and aspiration, and generates the heavy clouds.