“I said to abu Muhammad (a.s.), ‘Your grace causes shyness to me to ask you questions. May I ask you a question?” He said, “Yes, you may ask.” I said, “My master, do you have a son?” He said, “Yes, I do have a son.” I then said, “If anything will happen to you, where would I ask him (about my religion)?” He replied, “Ask him in Madina.”