Sawwar ibn Shabib al-A`raji also reported that he was sitting in Ibn Umar’s house when a man came and said:
“O Ibn Umar! There are groups of people bearing witness against us and attributing to us kufr and shirk.”
Ibn Umar replied: “Woe to you! Did you not say: ‘La Ilaha Ill Allah’?!”
Whereupon the entire household began to say La ilaha illa Allah until the house was shaking.