While the Prophet (ﷺ) was delivering a sermon on a Friday, a man stood up and said, "O Allah's Messenger (ﷺ)!
Invoke Allah to bless us with rain." (The Prophet (ﷺ) invoked Allah for rain.) So, the sky became overcast
and it started raining till one could hardly reach one's home. It kept on raining till the next Friday
when the same man or another man got up and said (to the Prophet), "Invoke Allah to withhold the
rain from us, for we have been drowned (with heavy rain )." The Prophet (ﷺ) said, "O Allah! Let it rain
around us and not on us." Then the clouds started dispersing around Medina and rain ceased to fall on
the people of Medina.
Sahih al-Bukhari Book 80, Hadith 39