Narrated from Sayyidah Aisha (may Allah be pleased with her), she said: Whenever the Messenger of Allah (peace and blessings of Allah be upon him) saw clouds rising from any direction in the sky, he would leave his work, even if it was prayer, and turn towards the cloud. If Allah drove the cloud away, he would praise Him, and if He sent down rain, the Prophet (peace and blessings of Allah be upon him) would say: «اللهم صيّباً نافعاً» "O Allah, send beneficial rain."