Abu Dawud
General Behavior
Book Number: 036 / Hadith Number: 5177
Narated By Mu'adh ibn Anas : (This version is same as previous No 5176 from the Prophet (pbuh), adding that): Afterwards another man came and said: Peace and Allah's mercy, blessings and forgiveness be upon you! whereupon he said: Forty. adding: Thus are excellent qualities rewarded.