Sunan an-Nasa'i, 679

It was narrated from Sa'd bin Abi Waqqas that the Messenger of Allah (S.A.W) said:"Whoever says, when he hears the Mu'adhdhin: 'Ashhadu an la ilaha illallah wahdahu la sharika lahu wa anna Muhammadan 'abduhu wa Rasuluhu, raditu Billahi Rabban, wa bil-Islami dinan was bi Muhammadin Rasula (I bear witness that there is none worthy of worship except Allah alone, with no partner or associate, and that Muhammad is the His slave and Messenger; I am content with Allah as my Lord, Islam as my religion and Muhammad as my Messenger),' his sins will be forgiven

Rapporté par Sa'd bin Abi Waqqas : Le Messager d'Allah (ﷺ) a dit : "Celui qui dit, lorsqu'il entend le muezzin : 'Ashhadu an la ilaha illallah wahdahu la sharika lahu wa anna Muhammadan 'abduhu wa Rasuluhu, raditu Billahi Rabban, wa bil-Islami dinan wa bi Muhammadin Rasula' (Je témoigne qu'il n'y a pas d'autre divinité qu'Allah seul, sans associé, et que Muhammad est Son serviteur et Son Messager ; je suis satisfait qu'Allah soit mon Seigneur, l'Islam ma religion et Muhammad mon Messager), ses péchés seront pardonnés