“Once I was in the presence of Abu ‘Abdillah (a.s.) sitting to his left side and Zurara was sitting to his right side. Abu Basil’ came in and he asked, ‘What do you say if one doubts in Allah?’ The Imam said, ‘He is an unbeliever, O abu Muhammad.’ Abu Basir then asked, ‘What if one has doubts in the Messenger of Allah?’ The Imam said, ‘He is an unbeliever.’ The narrator has said that the Imam then turned to Zurara and said, ‘He (such a person) is an unbeliever only if he rejects.’”