Sahih Bukhari
Invoking Allah for Rain (Istisqaa)
Volume: 002 / Book Number: 017 / Hadith Number: 131
Narrated Anas bin Malik
I p man complained to the Prophet about the destruction of livestock and property and the hunger of the offspring. So he invoked (Allah for rain. The narrator (Anas) did not mention that the Prophet had worn his cloak inside out or faced the Qibla.