Did we get a bill from Allah?

A man reached 70 years of age and was affected by a disease which made him unable to urinate. The doctors told him that he needs an operation to cure the disease. He agreed to do the operation as the problem was giving him severe pain for days. When the operation was completed the doctor gave him a bill which covered all the costs. After looking at the bill, the man started crying. Upon seeing this, the doctor said, "If the cost is too high then we could make some other arrangements for you." The old man replied, "I am not crying because of the money but I am crying because Allah (SWT) let me urinate for 70 years and HE never sent me a bill!" SubhanAllah!