During his stay with the baker, Imam Ahmed observed that the baker would constantly recite Istighfar (seek forgiveness from Allah). Imam Ahmed asked the baker if the constant practice of saying Istighfar had any effect on him. The baker responded by telling Imam Ahmed that Allah had accepted all of his duas (supplications), except one.
When he asked him what dua was it that hadn't been accepted, the baker replied that he had been asking Allah to provide him the privilege to meet the famous scholar Imam Ahmed bin Hanbal.
[Summarized from Al Jumuah magazine, vol 19, issue 7]