Sahih Bukhari | Volume 5 | Hadith Number 635

Narrated by Amr bin Maimuin
When Mu'adh arrived at Yemen, he led them (i.e. the people of Yemen) in the Fajr prayer wherein he recited: 'Allah took Abraham as a Khalil.' A man amongst the people said, "(How) glad the mother of Abraham is!" (In another narration) 'Amr said, "The Prophet sent Mu'adh to Yemen and he (led the people) in the Fajr prayer and recited: 'Allah took Abraham as a Khalil. A man behind him said, "(How) glad the mother of Abraham is!"