I heard Um Ad-Darda' saying, "Abu Ad-Darda' entered the house in an angry mood. I said to him.'What makes you angry?' He replied, 'By Allah! I do not find the followers of Muhammad doing thosegood things (which they used to do before) except the offering of congregational prayer." (Thishappened in the last days of Abu Ad-Darda' during the rule of `Uthman) .