The Book of Prayers (Kitab Al-Salat)

Muslim :: Book 4 : Hadith 1211

Ibn 'Abbas reported: Dhikr (mentioning the name of Allah) in a loud voice after obligatory prayers was (a common practice) during the lifetime of the Apostle of Allah (may peace be upon him) ; and when I heard that I came to knew that they (the people) had finished the prayer.