Narrated Anas: A man came to the Prophet on a Friday while he (the
Prophet) was delivering a sermon at Medina, and said, "There is lack
of rain, so please invoke your Lord to bless us with the rain." The
Prophet looked at the sky when no cloud could be detected. Then he
invoked Allah for rain. Clouds started gathering together and it
rained till the Medina valleys startedflowing with water. It continued
raining till the next Friday. Then that man (or some other man) stood
up while the Prophet was delivering the Friday sermon, and said, "We
are drowned; Please invoke your Lord to withhold it (rain) from us"
The Prophet smiled and said twice or thrice,"O Allah! Please let it
rain round about us and not upon us." The clouds started dispersing
over Medina to the right and tothe left, and it rained round about
Medina and not upon Medina. Allah showed them (the people) the miracle
of His Prophet and His response to his invocation.
Source: Sahih Bukhari Volume 8, Book 73, Number 115
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